./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-cav19/array_init_pair_sum_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:00:33,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:00:33,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:00:33,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:00:33,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:00:33,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:00:33,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:00:33,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:00:33,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:00:33,932 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:00:33,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:00:33,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:00:33,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:00:33,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:00:33,936 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:00:33,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:00:33,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:00:33,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:00:33,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:00:33,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:00:33,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:00:33,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:00:33,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:00:33,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:00:33,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:00:33,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:00:33,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:00:33,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:00:33,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:00:33,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:00:33,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:00:33,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:00:33,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:00:33,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:00:33,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:00:33,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:00:33,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:00:33,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:00:33,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:00:33,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:00:33,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:00:33,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:00:33,949 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 [2024-10-23 20:00:34,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:00:34,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:00:34,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:00:34,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:00:34,210 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:00:34,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2024-10-23 20:00:35,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:00:35,878 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:00:35,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2024-10-23 20:00:35,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7f3ea4a/f77fd4fed74141218611cbb4cd63138e/FLAG6fbd244dd [2024-10-23 20:00:35,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7f3ea4a/f77fd4fed74141218611cbb4cd63138e [2024-10-23 20:00:35,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:00:35,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:00:35,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:00:35,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:00:35,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:00:35,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:00:35" (1/1) ... [2024-10-23 20:00:35,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b07fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:35, skipping insertion in model container [2024-10-23 20:00:35,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:00:35" (1/1) ... [2024-10-23 20:00:35,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:00:36,108 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-cav19/array_init_pair_sum_const.c[416,429] [2024-10-23 20:00:36,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:00:36,131 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:00:36,142 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-cav19/array_init_pair_sum_const.c[416,429] [2024-10-23 20:00:36,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:00:36,163 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:00:36,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36 WrapperNode [2024-10-23 20:00:36,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:00:36,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:00:36,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:00:36,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:00:36,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,197 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-10-23 20:00:36,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:00:36,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:00:36,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:00:36,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:00:36,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,225 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-10-23 20:00:36,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:00:36,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:00:36,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:00:36,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:00:36,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (1/1) ... [2024-10-23 20:00:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:00:36,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:00:36,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:00:36,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:00:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:00:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:00:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 20:00:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 20:00:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 20:00:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 20:00:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 20:00:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 20:00:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 20:00:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-23 20:00:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:00:36,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:00:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 20:00:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 20:00:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 20:00:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-23 20:00:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 20:00:36,432 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:00:36,435 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:00:36,592 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-23 20:00:36,592 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:00:36,635 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:00:36,637 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-23 20:00:36,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:00:36 BoogieIcfgContainer [2024-10-23 20:00:36,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:00:36,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:00:36,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:00:36,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:00:36,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:00:35" (1/3) ... [2024-10-23 20:00:36,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7c9d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:00:36, skipping insertion in model container [2024-10-23 20:00:36,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:36" (2/3) ... [2024-10-23 20:00:36,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7c9d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:00:36, skipping insertion in model container [2024-10-23 20:00:36,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:00:36" (3/3) ... [2024-10-23 20:00:36,648 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2024-10-23 20:00:36,665 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:00:36,665 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:00:36,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:00:36,735 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;@1ddb3255, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:00:36,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:00:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 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) [2024-10-23 20:00:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 20:00:36,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:36,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:36,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:36,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1223517790, now seen corresponding path program 1 times [2024-10-23 20:00:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:36,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407733942] [2024-10-23 20:00:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:00:37,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:37,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407733942] [2024-10-23 20:00:37,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407733942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:00:37,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:00:37,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:00:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140726788] [2024-10-23 20:00:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:00:37,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:00:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:00:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:00:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:00:37,114 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:00:37,154 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2024-10-23 20:00:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:00:37,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-23 20:00:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:00:37,163 INFO L225 Difference]: With dead ends: 23 [2024-10-23 20:00:37,163 INFO L226 Difference]: Without dead ends: 11 [2024-10-23 20:00:37,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:00:37,169 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:00:37,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:00:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-23 20:00:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-23 20:00:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2024-10-23 20:00:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-10-23 20:00:37,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2024-10-23 20:00:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:00:37,199 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-10-23 20:00:37,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-10-23 20:00:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 20:00:37,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:37,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:37,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:00:37,201 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:37,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1535486091, now seen corresponding path program 1 times [2024-10-23 20:00:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582584663] [2024-10-23 20:00:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582584663] [2024-10-23 20:00:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582584663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:00:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:00:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:00:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620358761] [2024-10-23 20:00:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:00:37,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:00:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:00:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:00:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:00:37,365 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-23 20:00:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:00:37,391 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2024-10-23 20:00:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:00:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-23 20:00:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:00:37,392 INFO L225 Difference]: With dead ends: 18 [2024-10-23 20:00:37,392 INFO L226 Difference]: Without dead ends: 12 [2024-10-23 20:00:37,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:00:37,394 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:00:37,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:00:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-23 20:00:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-23 20:00:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2024-10-23 20:00:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-10-23 20:00:37,399 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2024-10-23 20:00:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:00:37,399 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-23 20:00:37,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-23 20:00:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-10-23 20:00:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-23 20:00:37,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:37,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:37,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:00:37,401 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:37,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash 810737228, now seen corresponding path program 1 times [2024-10-23 20:00:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058778710] [2024-10-23 20:00:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:37,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:37,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058778710] [2024-10-23 20:00:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058778710] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:00:37,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319378502] [2024-10-23 20:00:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:37,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:37,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:00:37,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:00:37,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:00:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:37,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 20:00:37,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:00:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:37,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:00:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:37,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319378502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:00:37,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:00:37,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-23 20:00:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620856359] [2024-10-23 20:00:37,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:00:37,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 20:00:37,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:00:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 20:00:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-23 20:00:37,762 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:00:37,817 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-10-23 20:00:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 20:00:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-23 20:00:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:00:37,819 INFO L225 Difference]: With dead ends: 24 [2024-10-23 20:00:37,819 INFO L226 Difference]: Without dead ends: 15 [2024-10-23 20:00:37,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-23 20:00:37,821 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:00:37,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:00:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-23 20:00:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-23 20:00:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-23 20:00:37,827 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-10-23 20:00:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:00:37,827 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-23 20:00:37,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-23 20:00:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-23 20:00:37,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:37,828 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:37,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:00:38,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:38,029 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:38,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1377544509, now seen corresponding path program 2 times [2024-10-23 20:00:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250936476] [2024-10-23 20:00:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:38,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250936476] [2024-10-23 20:00:38,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250936476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:00:38,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915328752] [2024-10-23 20:00:38,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 20:00:38,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:38,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:00:38,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:00:38,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:00:38,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 20:00:38,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:00:38,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-23 20:00:38,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:00:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:38,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:00:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915328752] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:00:38,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:00:38,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-23 20:00:38,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270500251] [2024-10-23 20:00:38,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:00:38,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 20:00:38,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:00:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 20:00:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-23 20:00:38,530 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:00:38,580 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-23 20:00:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 20:00:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-23 20:00:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:00:38,582 INFO L225 Difference]: With dead ends: 30 [2024-10-23 20:00:38,582 INFO L226 Difference]: Without dead ends: 21 [2024-10-23 20:00:38,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-23 20:00:38,584 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:00:38,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:00:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-23 20:00:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-23 20:00:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2024-10-23 20:00:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-10-23 20:00:38,591 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2024-10-23 20:00:38,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:00:38,591 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-10-23 20:00:38,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-10-23 20:00:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-23 20:00:38,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:38,595 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:38,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 20:00:38,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-23 20:00:38,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:38,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 18020899, now seen corresponding path program 3 times [2024-10-23 20:00:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633816448] [2024-10-23 20:00:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633816448] [2024-10-23 20:00:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633816448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:00:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823862578] [2024-10-23 20:00:39,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 20:00:39,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:39,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:00:39,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:00:39,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:00:39,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 20:00:39,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:00:39,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 20:00:39,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:00:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 20:00:39,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:00:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 20:00:39,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823862578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:00:39,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:00:39,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 18 [2024-10-23 20:00:39,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397594037] [2024-10-23 20:00:39,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:00:39,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-23 20:00:39,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:00:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-23 20:00:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-23 20:00:39,340 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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) [2024-10-23 20:00:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:00:39,667 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2024-10-23 20:00:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-23 20:00:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-23 20:00:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:00:39,672 INFO L225 Difference]: With dead ends: 101 [2024-10-23 20:00:39,672 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 20:00:39,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=525, Unknown=0, NotChecked=0, Total=870 [2024-10-23 20:00:39,674 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 271 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 20:00:39,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 44 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 20:00:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 20:00:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 36. [2024-10-23 20:00:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:00:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-10-23 20:00:39,689 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2024-10-23 20:00:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:00:39,689 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-10-23 20:00:39,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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) [2024-10-23 20:00:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-10-23 20:00:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 20:00:39,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:00:39,690 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:00:39,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:00:39,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:39,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:00:39,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:00:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash 193365580, now seen corresponding path program 4 times [2024-10-23 20:00:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:00:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705576292] [2024-10-23 20:00:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:00:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:00:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:00:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-23 20:00:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:00:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705576292] [2024-10-23 20:00:40,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705576292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:00:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988949380] [2024-10-23 20:00:40,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 20:00:40,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:00:40,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:00:40,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:00:40,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:00:40,419 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 20:00:40,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 20:00:40,427 WARN L253 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-10-23 20:00:40,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:00:40,477 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 25 treesize of output 1 [2024-10-23 20:00:40,486 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 25 treesize of output 1 [2024-10-23 20:00:40,521 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 38 treesize of output 16 [2024-10-23 20:00:40,530 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 38 treesize of output 16 [2024-10-23 20:00:40,565 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 38 treesize of output 16 [2024-10-23 20:00:40,573 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 38 treesize of output 16 [2024-10-23 20:00:40,607 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 38 treesize of output 16 [2024-10-23 20:00:40,615 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 38 treesize of output 16 [2024-10-23 20:00:40,652 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 38 treesize of output 16 [2024-10-23 20:00:40,659 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 38 treesize of output 16 [2024-10-23 20:00:40,695 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 38 treesize of output 16 [2024-10-23 20:00:40,704 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 38 treesize of output 16 [2024-10-23 20:00:40,749 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 38 treesize of output 16 [2024-10-23 20:00:40,759 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 38 treesize of output 16 [2024-10-23 20:00:40,797 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 38 treesize of output 16 [2024-10-23 20:00:40,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-10-23 20:00:40,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-10-23 20:00:40,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-10-23 20:00:40,894 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 38 treesize of output 16 [2024-10-23 20:00:40,903 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 38 treesize of output 16 [2024-10-23 20:00:40,944 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 38 treesize of output 16 [2024-10-23 20:00:40,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-10-23 20:00:41,001 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 36 treesize of output 16 [2024-10-23 20:00:41,009 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 36 treesize of output 16 [2024-10-23 20:00:41,264 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 27 treesize of output 23 [2024-10-23 20:00:41,335 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 51 treesize of output 50 [2024-10-23 20:00:41,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:41,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 76 [2024-10-23 20:00:41,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:41,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 102 [2024-10-23 20:00:41,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:41,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 128 [2024-10-23 20:00:41,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:41,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 143 treesize of output 154 [2024-10-23 20:00:42,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:42,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 180 [2024-10-23 20:00:42,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:42,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 189 treesize of output 206 [2024-10-23 20:00:42,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:42,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 212 treesize of output 232 [2024-10-23 20:00:42,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:42,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 235 treesize of output 258 [2024-10-23 20:00:43,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:43,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 258 treesize of output 284 [2024-10-23 20:00:43,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:43,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 293 treesize of output 308 [2024-10-23 20:00:43,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 20:00:43,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 277 treesize of output 292 [2024-10-23 20:00:43,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 210 [2024-10-23 20:00:46,566 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 19 treesize of output 7 [2024-10-23 20:00:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 24 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:00:46,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 20:00:48,149 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 342 treesize of output 340 [2024-10-23 20:00:48,938 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 9069762969590 treesize of output 9069494534134 [2024-10-23 20:00:58,802 WARN L286 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 53366 DAG size of output: 113 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-23 20:01:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 24 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 20:01:00,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988949380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 20:01:00,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 20:01:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 32, 32] total 74 [2024-10-23 20:01:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693227269] [2024-10-23 20:01:00,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 20:01:00,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-23 20:01:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:01:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-23 20:01:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=4727, Unknown=0, NotChecked=0, Total=5402 [2024-10-23 20:01:00,196 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 74 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 states have internal predecessors, (85), 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) [2024-10-23 20:01:04,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:13,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:21,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:29,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:37,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:45,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:01:54,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:02:02,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-23 20:02:10,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]