./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:26:30,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:26:30,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:26:30,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:26:30,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:26:30,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:26:30,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:26:30,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:26:30,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:26:30,223 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:26:30,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:26:30,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:26:30,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:26:30,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:26:30,224 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:26:30,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:26:30,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:26:30,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:26:30,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:26:30,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:26:30,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:26:30,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:26:30,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:26:30,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:26:30,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:26:30,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:26:30,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:26:30,228 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:26:30,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:26:30,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:26:30,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:26:30,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:26:30,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:26:30,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:26:30,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:26:30,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:26:30,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:26:30,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:26:30,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:26:30,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:26:30,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:26:30,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:26:30,233 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc [2024-10-10 22:26:30,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:26:30,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:26:30,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:26:30,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:26:30,478 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:26:30,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c [2024-10-10 22:26:31,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:26:32,031 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:26:32,031 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c [2024-10-10 22:26:32,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f02fc3191/c6dd908614e84180b5722cd8ec4fab8a/FLAG3c97a9280 [2024-10-10 22:26:32,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f02fc3191/c6dd908614e84180b5722cd8ec4fab8a [2024-10-10 22:26:32,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:26:32,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:26:32,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:26:32,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:26:32,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:26:32,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56598c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32, skipping insertion in model container [2024-10-10 22:26:32,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:26:32,287 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2024-10-10 22:26:32,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:26:32,314 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:26:32,323 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2024-10-10 22:26:32,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:26:32,341 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:26:32,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32 WrapperNode [2024-10-10 22:26:32,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:26:32,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:26:32,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:26:32,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:26:32,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,369 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-10-10 22:26:32,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:26:32,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:26:32,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:26:32,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:26:32,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,389 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 8, 5, 4]. 42 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-10-10 22:26:32,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:26:32,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:26:32,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:26:32,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:26:32,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (1/1) ... [2024-10-10 22:26:32,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:26:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:32,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:26:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-10 22:26:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:26:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:26:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:26:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 22:26:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-10 22:26:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-10 22:26:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:26:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:26:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:26:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:26:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 22:26:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-10 22:26:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:26:32,545 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:26:32,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:26:32,662 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-10 22:26:32,662 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:26:32,697 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:26:32,697 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-10 22:26:32,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:26:32 BoogieIcfgContainer [2024-10-10 22:26:32,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:26:32,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:26:32,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:26:32,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:26:32,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:26:32" (1/3) ... [2024-10-10 22:26:32,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f858a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:26:32, skipping insertion in model container [2024-10-10 22:26:32,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:26:32" (2/3) ... [2024-10-10 22:26:32,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f858a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:26:32, skipping insertion in model container [2024-10-10 22:26:32,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:26:32" (3/3) ... [2024-10-10 22:26:32,704 INFO L112 eAbstractionObserver]: Analyzing ICFG sina2.c [2024-10-10 22:26:32,718 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:26:32,718 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:26:32,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:26:32,774 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;@4409b2f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:26:32,774 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:26:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 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) [2024-10-10 22:26:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:26:32,787 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:32,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:32,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:32,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -895324270, now seen corresponding path program 1 times [2024-10-10 22:26:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:32,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60588015] [2024-10-10 22:26:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60588015] [2024-10-10 22:26:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60588015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:26:32,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:26:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:26:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091557625] [2024-10-10 22:26:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:26:32,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:26:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:26:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:26:32,981 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-10-10 22:26:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:33,017 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2024-10-10 22:26:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:26:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-10-10 22:26:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:33,027 INFO L225 Difference]: With dead ends: 33 [2024-10-10 22:26:33,027 INFO L226 Difference]: Without dead ends: 15 [2024-10-10 22:26:33,030 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 [2024-10-10 22:26:33,036 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:33,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:26:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-10 22:26:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-10 22:26:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-10-10 22:26:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-10 22:26:33,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 13 [2024-10-10 22:26:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:33,065 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-10 22:26:33,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-10-10 22:26:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-10 22:26:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:26:33,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:33,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:33,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:26:33,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:33,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash -194259692, now seen corresponding path program 1 times [2024-10-10 22:26:33,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:33,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639975744] [2024-10-10 22:26:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:33,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639975744] [2024-10-10 22:26:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639975744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:26:33,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:26:33,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:26:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565629183] [2024-10-10 22:26:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:26:33,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:26:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:26:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:26:33,218 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-10-10 22:26:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:33,252 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-10-10 22:26:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:26:33,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-10-10 22:26:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:33,253 INFO L225 Difference]: With dead ends: 33 [2024-10-10 22:26:33,253 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 22:26:33,253 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 [2024-10-10 22:26:33,254 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:33,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:26:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 22:26:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2024-10-10 22:26:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-10-10 22:26:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-10-10 22:26:33,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2024-10-10 22:26:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:33,262 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-10-10 22:26:33,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-10-10 22:26:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-10-10 22:26:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-10 22:26:33,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:33,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:33,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:26:33,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:33,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash -925805478, now seen corresponding path program 1 times [2024-10-10 22:26:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427678723] [2024-10-10 22:26:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427678723] [2024-10-10 22:26:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427678723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890057650] [2024-10-10 22:26:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:34,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:34,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:34,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:34,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:26:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:34,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-10 22:26:34,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:34,345 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 [2024-10-10 22:26:34,377 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 [2024-10-10 22:26:34,464 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 [2024-10-10 22:26:34,501 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 [2024-10-10 22:26:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:34,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:34,667 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 24 treesize of output 22 [2024-10-10 22:26:34,670 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 34 treesize of output 32 [2024-10-10 22:26:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890057650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:34,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:34,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-10 22:26:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560581419] [2024-10-10 22:26:34,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:34,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 22:26:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 22:26:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-10-10 22:26:34,706 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 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) [2024-10-10 22:26:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:34,978 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-10-10 22:26:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-10 22:26:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 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) Word has length 16 [2024-10-10 22:26:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:34,979 INFO L225 Difference]: With dead ends: 43 [2024-10-10 22:26:34,979 INFO L226 Difference]: Without dead ends: 41 [2024-10-10 22:26:34,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2024-10-10 22:26:34,980 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:34,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:26:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-10 22:26:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2024-10-10 22:26:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) [2024-10-10 22:26:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-10-10 22:26:34,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2024-10-10 22:26:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:34,986 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-10-10 22:26:34,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 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) [2024-10-10 22:26:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-10-10 22:26:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-10 22:26:34,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:34,987 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:35,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:26:35,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:35,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:35,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2031512559, now seen corresponding path program 2 times [2024-10-10 22:26:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667575499] [2024-10-10 22:26:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667575499] [2024-10-10 22:26:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667575499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333283348] [2024-10-10 22:26:35,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:26:35,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:35,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:35,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:26:35,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:26:35,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:35,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:26:35,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333283348] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:35,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:35,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-10 22:26:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700105324] [2024-10-10 22:26:35,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:35,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:26:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:26:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:26:35,372 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2024-10-10 22:26:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:35,449 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-10-10 22:26:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:26:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) Word has length 17 [2024-10-10 22:26:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:35,450 INFO L225 Difference]: With dead ends: 64 [2024-10-10 22:26:35,450 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 22:26:35,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-10 22:26:35,451 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:35,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 22:26:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2024-10-10 22:26:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 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) [2024-10-10 22:26:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-10-10 22:26:35,456 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2024-10-10 22:26:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:35,457 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-10-10 22:26:35,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2024-10-10 22:26:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-10-10 22:26:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-10 22:26:35,457 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:35,457 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:35,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:35,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:35,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:35,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2030966525, now seen corresponding path program 3 times [2024-10-10 22:26:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567569466] [2024-10-10 22:26:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:35,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:35,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567569466] [2024-10-10 22:26:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567569466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993381671] [2024-10-10 22:26:35,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:26:35,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:35,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:35,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:35,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:26:35,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:26:35,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:35,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:26:35,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:26:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993381671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:35,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-10 22:26:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047309777] [2024-10-10 22:26:35,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:35,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:26:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:26:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:26:35,868 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2024-10-10 22:26:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:35,942 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-10-10 22:26:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 22:26:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) Word has length 17 [2024-10-10 22:26:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:35,943 INFO L225 Difference]: With dead ends: 39 [2024-10-10 22:26:35,943 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 22:26:35,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:26:35,944 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:35,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 33 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 22:26:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2024-10-10 22:26:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 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) [2024-10-10 22:26:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-10 22:26:35,948 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2024-10-10 22:26:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:35,948 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-10 22:26:35,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2024-10-10 22:26:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-10 22:26:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:26:35,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:35,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:35,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:36,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:36,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:36,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1382312724, now seen corresponding path program 4 times [2024-10-10 22:26:36,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477956577] [2024-10-10 22:26:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:36,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477956577] [2024-10-10 22:26:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477956577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679194012] [2024-10-10 22:26:36,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:26:36,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:36,879 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:36,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:26:36,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:26:36,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:36,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-10 22:26:36,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:36,944 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 [2024-10-10 22:26:36,967 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 [2024-10-10 22:26:36,996 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 25 treesize of output 24 [2024-10-10 22:26:37,142 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 15 [2024-10-10 22:26:37,187 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 33 treesize of output 21 [2024-10-10 22:26:37,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:37,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-10-10 22:26:37,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:37,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-10-10 22:26:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:37,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679194012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:37,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-10-10 22:26:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596581660] [2024-10-10 22:26:37,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:37,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-10 22:26:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-10 22:26:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2024-10-10 22:26:37,785 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 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) [2024-10-10 22:26:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:39,213 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2024-10-10 22:26:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-10 22:26:39,214 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 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) Word has length 19 [2024-10-10 22:26:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:39,215 INFO L225 Difference]: With dead ends: 106 [2024-10-10 22:26:39,216 INFO L226 Difference]: Without dead ends: 96 [2024-10-10 22:26:39,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=628, Invalid=3928, Unknown=0, NotChecked=0, Total=4556 [2024-10-10 22:26:39,218 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 212 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:39,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 197 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:26:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-10 22:26:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 46. [2024-10-10 22:26:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 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) [2024-10-10 22:26:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-10-10 22:26:39,229 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 19 [2024-10-10 22:26:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:39,229 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-10-10 22:26:39,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 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) [2024-10-10 22:26:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-10-10 22:26:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-10 22:26:39,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:39,230 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:39,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 22:26:39,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 22:26:39,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:39,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1637179778, now seen corresponding path program 5 times [2024-10-10 22:26:39,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:39,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077371961] [2024-10-10 22:26:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:39,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077371961] [2024-10-10 22:26:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077371961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264684953] [2024-10-10 22:26:39,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:26:39,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:39,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:39,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:26:39,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-10 22:26:39,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:39,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:26:39,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:39,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264684953] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:39,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-10 22:26:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271006936] [2024-10-10 22:26:39,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:39,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 22:26:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 22:26:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:26:39,682 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-10-10 22:26:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:39,879 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-10-10 22:26:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-10 22:26:39,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 [2024-10-10 22:26:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:39,880 INFO L225 Difference]: With dead ends: 88 [2024-10-10 22:26:39,880 INFO L226 Difference]: Without dead ends: 68 [2024-10-10 22:26:39,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:26:39,881 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:39,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-10 22:26:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2024-10-10 22:26:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 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) [2024-10-10 22:26:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2024-10-10 22:26:39,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 21 [2024-10-10 22:26:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:39,900 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2024-10-10 22:26:39,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-10-10 22:26:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2024-10-10 22:26:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-10 22:26:39,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:39,901 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:39,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:40,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:40,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:40,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash 329439112, now seen corresponding path program 6 times [2024-10-10 22:26:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581470446] [2024-10-10 22:26:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:26:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581470446] [2024-10-10 22:26:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581470446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123200160] [2024-10-10 22:26:40,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:26:40,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:40,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:40,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:26:40,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-10 22:26:40,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:40,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:26:40,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:40,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:40,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123200160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:40,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:40,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2024-10-10 22:26:40,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788843041] [2024-10-10 22:26:40,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:40,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-10 22:26:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:40,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-10 22:26:40,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:26:40,385 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 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) [2024-10-10 22:26:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:40,492 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2024-10-10 22:26:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 22:26:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 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 22 [2024-10-10 22:26:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:40,492 INFO L225 Difference]: With dead ends: 78 [2024-10-10 22:26:40,493 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 22:26:40,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:26:40,493 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:40,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 49 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 22:26:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2024-10-10 22:26:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:26:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-10-10 22:26:40,501 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2024-10-10 22:26:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:40,503 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-10-10 22:26:40,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 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) [2024-10-10 22:26:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-10-10 22:26:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-10 22:26:40,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:40,504 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:40,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:40,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:26:40,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:40,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 350502234, now seen corresponding path program 7 times [2024-10-10 22:26:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888961826] [2024-10-10 22:26:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:41,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888961826] [2024-10-10 22:26:41,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888961826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681411444] [2024-10-10 22:26:41,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:26:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:41,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:41,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:26:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:41,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-10 22:26:41,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:41,668 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 [2024-10-10 22:26:41,675 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 [2024-10-10 22:26:41,685 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 [2024-10-10 22:26:41,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:41,702 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 [2024-10-10 22:26:41,768 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 [2024-10-10 22:26:41,806 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 [2024-10-10 22:26:41,845 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 [2024-10-10 22:26:41,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:41,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-10-10 22:26:41,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:41,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-10-10 22:26:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:42,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:42,062 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-10-10 22:26:42,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 54 [2024-10-10 22:26:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:42,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:43,022 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 560 treesize of output 526 [2024-10-10 22:26:43,153 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-10-10 22:26:43,155 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 1841865 treesize of output 1594523 [2024-10-10 22:26:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681411444] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:43,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:43,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 42 [2024-10-10 22:26:43,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023158538] [2024-10-10 22:26:43,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:43,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-10 22:26:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:43,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-10 22:26:43,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2024-10-10 22:26:43,484 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 42 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 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) [2024-10-10 22:26:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:44,597 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2024-10-10 22:26:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-10 22:26:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 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) Word has length 22 [2024-10-10 22:26:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:44,598 INFO L225 Difference]: With dead ends: 65 [2024-10-10 22:26:44,598 INFO L226 Difference]: Without dead ends: 63 [2024-10-10 22:26:44,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=325, Invalid=2431, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 22:26:44,599 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 113 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:44,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 198 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:26:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-10 22:26:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2024-10-10 22:26:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 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) [2024-10-10 22:26:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-10-10 22:26:44,609 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 22 [2024-10-10 22:26:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:44,610 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-10-10 22:26:44,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 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) [2024-10-10 22:26:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-10-10 22:26:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-10 22:26:44,610 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:44,610 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:44,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:44,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:44,815 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:44,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1479697233, now seen corresponding path program 8 times [2024-10-10 22:26:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:44,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537611069] [2024-10-10 22:26:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:44,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:44,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:44,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537611069] [2024-10-10 22:26:44,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537611069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:44,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623585324] [2024-10-10 22:26:44,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:26:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:44,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:44,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:26:44,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:26:44,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:44,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:26:44,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:45,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623585324] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:45,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-10 22:26:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26523496] [2024-10-10 22:26:45,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:45,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:26:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:26:45,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:26:45,080 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 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) [2024-10-10 22:26:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:45,200 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2024-10-10 22:26:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-10 22:26:45,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 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 23 [2024-10-10 22:26:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:45,201 INFO L225 Difference]: With dead ends: 101 [2024-10-10 22:26:45,201 INFO L226 Difference]: Without dead ends: 83 [2024-10-10 22:26:45,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:26:45,202 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:45,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 65 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-10 22:26:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 57. [2024-10-10 22:26:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 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) [2024-10-10 22:26:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-10-10 22:26:45,231 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 23 [2024-10-10 22:26:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:45,231 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-10-10 22:26:45,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 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) [2024-10-10 22:26:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-10-10 22:26:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-10 22:26:45,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:45,232 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:45,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:45,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:26:45,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:45,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1052577981, now seen corresponding path program 9 times [2024-10-10 22:26:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:45,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789524406] [2024-10-10 22:26:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:45,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789524406] [2024-10-10 22:26:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789524406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224652700] [2024-10-10 22:26:45,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:26:45,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:45,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:45,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:26:45,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 22:26:45,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:45,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:26:45,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:45,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:26:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224652700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:45,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-10 22:26:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059541911] [2024-10-10 22:26:45,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:45,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:26:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:26:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:26:45,734 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2024-10-10 22:26:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:45,944 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-10-10 22:26:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-10 22:26:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) Word has length 23 [2024-10-10 22:26:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:45,945 INFO L225 Difference]: With dead ends: 84 [2024-10-10 22:26:45,945 INFO L226 Difference]: Without dead ends: 68 [2024-10-10 22:26:45,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-10-10 22:26:45,945 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:45,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 120 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-10 22:26:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2024-10-10 22:26:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 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) [2024-10-10 22:26:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-10-10 22:26:45,956 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2024-10-10 22:26:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:45,956 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-10-10 22:26:45,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2024-10-10 22:26:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-10-10 22:26:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 22:26:45,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:45,957 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:45,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 22:26:46,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:46,158 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:46,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash 23154964, now seen corresponding path program 10 times [2024-10-10 22:26:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829969842] [2024-10-10 22:26:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:47,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829969842] [2024-10-10 22:26:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829969842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070882810] [2024-10-10 22:26:47,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:26:47,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:47,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:47,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:47,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:26:47,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:26:47,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:47,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-10 22:26:47,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:47,376 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 [2024-10-10 22:26:47,391 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 [2024-10-10 22:26:47,401 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 [2024-10-10 22:26:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:47,459 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 28 treesize of output 30 [2024-10-10 22:26:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:47,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:47,558 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 37 treesize of output 42 [2024-10-10 22:26:51,766 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 [2024-10-10 22:26:51,846 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 [2024-10-10 22:26:51,907 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 [2024-10-10 22:26:51,980 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 35 treesize of output 23 [2024-10-10 22:26:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,226 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,232 INFO L349 Elim1Store]: treesize reduction 6, result has 14.3 percent of original size [2024-10-10 22:26:52,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 77 [2024-10-10 22:26:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,317 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,321 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,324 INFO L349 Elim1Store]: treesize reduction 6, result has 14.3 percent of original size [2024-10-10 22:26:52,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 83 [2024-10-10 22:26:52,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,410 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:26:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:26:52,417 INFO L349 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2024-10-10 22:26:52,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 98 [2024-10-10 22:26:52,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:52,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-10-10 22:26:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:52,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:53,478 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 95 treesize of output 89 [2024-10-10 22:26:53,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:53,489 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 10079 treesize of output 9439 [2024-10-10 22:26:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070882810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:53,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 55 [2024-10-10 22:26:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002255679] [2024-10-10 22:26:53,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:53,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-10 22:26:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-10 22:26:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2627, Unknown=1, NotChecked=0, Total=2970 [2024-10-10 22:26:53,636 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 55 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 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) [2024-10-10 22:26:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:56,164 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2024-10-10 22:26:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-10 22:26:56,165 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 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 25 [2024-10-10 22:26:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:56,165 INFO L225 Difference]: With dead ends: 95 [2024-10-10 22:26:56,165 INFO L226 Difference]: Without dead ends: 56 [2024-10-10 22:26:56,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=725, Invalid=5126, Unknown=1, NotChecked=0, Total=5852 [2024-10-10 22:26:56,167 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:56,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 165 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1105 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 22:26:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-10 22:26:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2024-10-10 22:26:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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) [2024-10-10 22:26:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-10-10 22:26:56,179 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 25 [2024-10-10 22:26:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:56,179 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-10-10 22:26:56,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 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) [2024-10-10 22:26:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-10-10 22:26:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-10 22:26:56,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:56,180 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:56,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 22:26:56,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 22:26:56,384 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:56,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1837684606, now seen corresponding path program 11 times [2024-10-10 22:26:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:56,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719171975] [2024-10-10 22:26:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:26:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719171975] [2024-10-10 22:26:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719171975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393975523] [2024-10-10 22:26:56,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:26:56,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:56,520 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:56,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:26:56,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-10 22:26:56,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:26:56,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:26:56,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:26:56,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:26:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393975523] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:56,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:56,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-10 22:26:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42872273] [2024-10-10 22:26:56,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:56,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-10 22:26:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-10 22:26:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:26:56,821 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) [2024-10-10 22:26:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:26:57,035 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2024-10-10 22:26:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-10 22:26:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 27 [2024-10-10 22:26:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:26:57,036 INFO L225 Difference]: With dead ends: 82 [2024-10-10 22:26:57,036 INFO L226 Difference]: Without dead ends: 76 [2024-10-10 22:26:57,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-10-10 22:26:57,037 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 99 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:26:57,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 110 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:26:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-10 22:26:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 49. [2024-10-10 22:26:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 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) [2024-10-10 22:26:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-10-10 22:26:57,055 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 27 [2024-10-10 22:26:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:26:57,055 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-10-10 22:26:57,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) [2024-10-10 22:26:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-10-10 22:26:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 22:26:57,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:26:57,057 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:26:57,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-10 22:26:57,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 22:26:57,258 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:26:57,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:26:57,259 INFO L85 PathProgramCache]: Analyzing trace with hash -374602502, now seen corresponding path program 1 times [2024-10-10 22:26:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:26:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369124960] [2024-10-10 22:26:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:26:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:26:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369124960] [2024-10-10 22:26:58,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369124960] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:26:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861077777] [2024-10-10 22:26:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:26:58,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:26:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:26:58,604 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:26:58,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:26:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:26:58,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-10 22:26:58,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:26:58,684 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 [2024-10-10 22:26:58,691 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 [2024-10-10 22:26:58,700 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 [2024-10-10 22:26:58,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:58,715 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 [2024-10-10 22:26:58,777 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 [2024-10-10 22:26:58,819 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 [2024-10-10 22:26:58,859 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 [2024-10-10 22:26:58,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:58,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-10-10 22:26:58,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:58,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-10-10 22:26:59,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:59,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-10-10 22:26:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:59,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:26:59,732 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 100 treesize of output 94 [2024-10-10 22:26:59,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:26:59,739 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 10769 treesize of output 10129 [2024-10-10 22:26:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:26:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861077777] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:26:59,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:26:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 49 [2024-10-10 22:26:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000874871] [2024-10-10 22:26:59,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:26:59,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-10 22:26:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:26:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-10 22:26:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2024-10-10 22:26:59,844 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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) [2024-10-10 22:27:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:27:00,281 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-10-10 22:27:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-10 22:27:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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 28 [2024-10-10 22:27:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:27:00,282 INFO L225 Difference]: With dead ends: 51 [2024-10-10 22:27:00,282 INFO L226 Difference]: Without dead ends: 30 [2024-10-10 22:27:00,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 22:27:00,283 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:27:00,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:27:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-10 22:27:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-10 22:27:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 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) [2024-10-10 22:27:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-10-10 22:27:00,290 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 28 [2024-10-10 22:27:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:27:00,291 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-10-10 22:27:00,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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) [2024-10-10 22:27:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-10-10 22:27:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 22:27:00,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:27:00,291 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:27:00,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-10 22:27:00,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:27:00,496 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:27:00,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:27:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 3888730, now seen corresponding path program 12 times [2024-10-10 22:27:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:27:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364751204] [2024-10-10 22:27:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:27:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:27:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:27:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:27:02,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:27:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364751204] [2024-10-10 22:27:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364751204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:27:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831168815] [2024-10-10 22:27:02,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:27:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:27:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:27:02,147 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:27:02,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:27:02,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-10 22:27:02,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:27:02,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-10-10 22:27:02,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:27:02,342 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 [2024-10-10 22:27:02,382 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 [2024-10-10 22:27:02,428 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 [2024-10-10 22:27:02,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:02,482 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 [2024-10-10 22:27:02,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:02,543 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 [2024-10-10 22:27:02,631 INFO L349 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2024-10-10 22:27:02,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 50 [2024-10-10 22:27:02,870 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 [2024-10-10 22:27:02,954 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 [2024-10-10 22:27:03,023 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 [2024-10-10 22:27:03,118 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 [2024-10-10 22:27:03,187 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 [2024-10-10 22:27:03,466 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2024-10-10 22:27:03,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 51 treesize of output 59 [2024-10-10 22:27:03,568 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2024-10-10 22:27:03,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 63 [2024-10-10 22:27:03,696 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2024-10-10 22:27:03,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 58 treesize of output 66 [2024-10-10 22:27:03,805 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2024-10-10 22:27:03,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 61 treesize of output 69 [2024-10-10 22:27:03,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:27:03,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:27:03,927 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:27:03,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:27:03,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:27:03,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:03,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 84 [2024-10-10 22:27:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:27:04,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:27:06,435 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 1847 treesize of output 1771 [2024-10-10 22:27:09,342 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-10-10 22:27:09,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13258550196745 treesize of output 12861356973769 [2024-10-10 22:27:26,643 WARN L286 SmtUtils]: Spent 17.11s on a formula simplification. DAG size of input: 55446 DAG size of output: 222 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-10 22:27:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:27:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831168815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:27:27,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:27:27,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 24] total 70 [2024-10-10 22:27:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371976690] [2024-10-10 22:27:27,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:27:27,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-10-10 22:27:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:27:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-10-10 22:27:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=4382, Unknown=0, NotChecked=0, Total=4830 [2024-10-10 22:27:27,928 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 70 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 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) [2024-10-10 22:27:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:27:47,834 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-10-10 22:27:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-10 22:27:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 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 28 [2024-10-10 22:27:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:27:47,836 INFO L225 Difference]: With dead ends: 112 [2024-10-10 22:27:47,837 INFO L226 Difference]: Without dead ends: 93 [2024-10-10 22:27:47,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1420, Invalid=11462, Unknown=0, NotChecked=0, Total=12882 [2024-10-10 22:27:47,843 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 278 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:27:47,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 342 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-10-10 22:27:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-10 22:27:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 51. [2024-10-10 22:27:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 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) [2024-10-10 22:27:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2024-10-10 22:27:47,873 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 28 [2024-10-10 22:27:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:27:47,874 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2024-10-10 22:27:47,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 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) [2024-10-10 22:27:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2024-10-10 22:27:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-10 22:27:47,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:27:47,878 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:27:47,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 22:27:48,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:27:48,082 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:27:48,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:27:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1029884541, now seen corresponding path program 13 times [2024-10-10 22:27:48,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:27:48,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651872195] [2024-10-10 22:27:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:27:48,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:27:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:27:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:27:48,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:27:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651872195] [2024-10-10 22:27:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651872195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:27:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694642984] [2024-10-10 22:27:48,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:27:48,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:27:48,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:27:48,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:27:48,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 22:27:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:27:48,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 22:27:48,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:27:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:27:48,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:27:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:27:49,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694642984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:27:49,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:27:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-10 22:27:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714372839] [2024-10-10 22:27:49,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:27:49,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 22:27:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:27:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 22:27:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-10 22:27:49,119 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2024-10-10 22:27:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:27:49,792 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-10-10 22:27:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-10 22:27:49,792 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) Word has length 29 [2024-10-10 22:27:49,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:27:49,793 INFO L225 Difference]: With dead ends: 105 [2024-10-10 22:27:49,793 INFO L226 Difference]: Without dead ends: 89 [2024-10-10 22:27:49,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2024-10-10 22:27:49,794 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 165 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:27:49,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 122 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:27:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-10 22:27:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 52. [2024-10-10 22:27:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 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) [2024-10-10 22:27:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-10-10 22:27:49,816 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 29 [2024-10-10 22:27:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:27:49,816 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-10-10 22:27:49,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2024-10-10 22:27:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-10-10 22:27:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-10 22:27:49,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:27:49,817 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:27:49,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-10 22:27:50,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 22:27:50,022 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:27:50,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:27:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1780860766, now seen corresponding path program 14 times [2024-10-10 22:27:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:27:50,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752921779] [2024-10-10 22:27:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:27:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:27:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:27:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-10 22:27:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:27:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752921779] [2024-10-10 22:27:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752921779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:27:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967926002] [2024-10-10 22:27:50,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:27:50,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:27:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:27:50,373 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:27:50,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-10 22:27:50,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:27:50,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:27:50,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 22:27:50,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:27:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-10 22:27:50,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:27:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-10 22:27:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967926002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:27:51,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:27:51,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-10 22:27:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373573529] [2024-10-10 22:27:51,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:27:51,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 22:27:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:27:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 22:27:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-10 22:27:51,087 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2024-10-10 22:27:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:27:51,573 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-10 22:27:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-10 22:27:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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 [2024-10-10 22:27:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:27:51,574 INFO L225 Difference]: With dead ends: 104 [2024-10-10 22:27:51,574 INFO L226 Difference]: Without dead ends: 63 [2024-10-10 22:27:51,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-10-10 22:27:51,575 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:27:51,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 54 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:27:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-10 22:27:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2024-10-10 22:27:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 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) [2024-10-10 22:27:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-10-10 22:27:51,587 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 31 [2024-10-10 22:27:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:27:51,588 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-10-10 22:27:51,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2024-10-10 22:27:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-10-10 22:27:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-10 22:27:51,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:27:51,588 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:27:51,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-10 22:27:51,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 22:27:51,789 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:27:51,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:27:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash -155547884, now seen corresponding path program 15 times [2024-10-10 22:27:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:27:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765317277] [2024-10-10 22:27:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:27:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:27:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:27:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:27:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:27:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765317277] [2024-10-10 22:27:55,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765317277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:27:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849570206] [2024-10-10 22:27:55,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:27:55,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:27:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:27:55,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:27:55,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-10 22:27:55,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-10 22:27:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:27:55,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-10-10 22:27:55,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:27:55,432 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 [2024-10-10 22:27:55,516 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 [2024-10-10 22:27:55,681 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 [2024-10-10 22:27:55,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:55,842 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 [2024-10-10 22:27:56,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:56,047 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 [2024-10-10 22:27:56,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:56,229 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 [2024-10-10 22:27:56,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:56,396 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 [2024-10-10 22:27:56,738 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 [2024-10-10 22:27:56,868 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 [2024-10-10 22:27:56,999 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 [2024-10-10 22:27:57,171 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 [2024-10-10 22:27:57,380 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 29 treesize of output 21 [2024-10-10 22:27:57,544 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 41 treesize of output 29 [2024-10-10 22:27:58,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:58,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-10-10 22:27:58,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:58,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-10-10 22:27:58,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:58,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-10-10 22:27:58,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:27:58,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-10-10 22:27:59,273 INFO L349 Elim1Store]: treesize reduction 84, result has 57.8 percent of original size [2024-10-10 22:27:59,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 64 treesize of output 144 [2024-10-10 22:28:00,179 INFO L349 Elim1Store]: treesize reduction 84, result has 57.8 percent of original size [2024-10-10 22:28:00,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 246 treesize of output 242 [2024-10-10 22:28:05,138 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-10 22:28:05,295 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.