./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19809800fbb837760f7dcf4b8a93f7732bb250505f3f751815caa258bac4c35a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:20:29,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:20:29,740 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:20:29,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:20:29,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:20:29,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:20:29,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:20:29,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:20:29,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:20:29,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:20:29,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:20:29,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:20:29,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:20:29,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:20:29,774 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:20:29,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:20:29,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:20:29,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:20:29,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:20:29,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:20:29,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:20:29,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:20:29,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:20:29,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:20:29,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:20:29,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:20:29,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:20:29,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:20:29,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:20:29,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:20:29,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:20:29,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:20:29,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19809800fbb837760f7dcf4b8a93f7732bb250505f3f751815caa258bac4c35a [2024-11-16 02:20:29,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:20:29,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:20:29,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:20:30,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:20:30,000 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:20:30,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i [2024-11-16 02:20:31,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:20:31,327 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:20:31,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i [2024-11-16 02:20:31,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4819ee9/f8f243043d4d4fa6a1eeba51d043ea7b/FLAG7f7c2b4fd [2024-11-16 02:20:31,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4819ee9/f8f243043d4d4fa6a1eeba51d043ea7b [2024-11-16 02:20:31,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:20:31,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:20:31,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:20:31,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:20:31,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:20:31,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:31,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10eba17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31, skipping insertion in model container [2024-11-16 02:20:31,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:31,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:20:31,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i[860,873] [2024-11-16 02:20:31,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:20:31,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:20:31,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copyInitSum_ground.i[860,873] [2024-11-16 02:20:31,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:20:31,933 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:20:31,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31 WrapperNode [2024-11-16 02:20:31,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:20:31,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:20:31,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:20:31,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:20:31,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:31,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:31,990 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-16 02:20:31,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:20:31,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:20:31,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:20:31,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:20:32,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,016 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 2, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-16 02:20:32,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,019 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:20:32,023 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:20:32,023 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:20:32,023 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:20:32,023 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (1/1) ... [2024-11-16 02:20:32,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:20:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:32,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:20:32,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:20:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:20:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:20:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:20:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:20:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:20:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:20:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:20:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:20:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:20:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:20:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:20:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:20:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:20:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:20:32,161 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:20:32,163 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:20:32,261 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-16 02:20:32,266 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-16 02:20:32,266 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:20:32,275 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:20:32,276 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:20:32,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:20:32 BoogieIcfgContainer [2024-11-16 02:20:32,276 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:20:32,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:20:32,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:20:32,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:20:32,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:20:31" (1/3) ... [2024-11-16 02:20:32,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106cd05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:20:32, skipping insertion in model container [2024-11-16 02:20:32,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:20:31" (2/3) ... [2024-11-16 02:20:32,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106cd05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:20:32, skipping insertion in model container [2024-11-16 02:20:32,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:20:32" (3/3) ... [2024-11-16 02:20:32,286 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum_ground.i [2024-11-16 02:20:32,298 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:20:32,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:20:32,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:20:32,342 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;@45782837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:20:32,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:20:32,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:20:32,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:32,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:32,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:32,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1909565691, now seen corresponding path program 1 times [2024-11-16 02:20:32,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348677441] [2024-11-16 02:20:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:20:32,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348677441] [2024-11-16 02:20:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348677441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:20:32,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:20:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:20:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754273380] [2024-11-16 02:20:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:20:32,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:20:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:20:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:20:32,511 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 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) 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) [2024-11-16 02:20:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:32,522 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-11-16 02:20:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:20:32,524 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 [2024-11-16 02:20:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:32,529 INFO L225 Difference]: With dead ends: 41 [2024-11-16 02:20:32,529 INFO L226 Difference]: Without dead ends: 18 [2024-11-16 02:20:32,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:20:32,533 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:32,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:20:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-16 02:20:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-16 02:20:32,552 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) [2024-11-16 02:20:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-16 02:20:32,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2024-11-16 02:20:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:32,554 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-16 02:20:32,554 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) [2024-11-16 02:20:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-16 02:20:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:20:32,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:32,555 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:32,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:20:32,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:32,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 18895182, now seen corresponding path program 1 times [2024-11-16 02:20:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859789344] [2024-11-16 02:20:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:32,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:20:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859789344] [2024-11-16 02:20:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859789344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:20:32,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:20:32,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:20:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036542625] [2024-11-16 02:20:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:20:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:20:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:20:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:20:32,626 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:32,648 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-16 02:20:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:20:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 02:20:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:32,649 INFO L225 Difference]: With dead ends: 38 [2024-11-16 02:20:32,649 INFO L226 Difference]: Without dead ends: 24 [2024-11-16 02:20:32,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:20:32,651 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:32,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:20:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-16 02:20:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-16 02:20:32,654 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) [2024-11-16 02:20:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-16 02:20:32,656 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-11-16 02:20:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:32,657 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-16 02:20:32,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-16 02:20:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:20:32,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:32,657 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:32,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:20:32,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:32,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2014313677, now seen corresponding path program 1 times [2024-11-16 02:20:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522342912] [2024-11-16 02:20:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:20:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522342912] [2024-11-16 02:20:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522342912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:20:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397527991] [2024-11-16 02:20:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:32,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:32,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:20:32,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:20:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:32,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:20:32,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:20:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:20:32,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:20:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:20:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397527991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:20:32,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:20:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:20:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935614752] [2024-11-16 02:20:32,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:20:32,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:20:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:20:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:20:32,882 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:32,923 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-16 02:20:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:20:32,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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) Word has length 22 [2024-11-16 02:20:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:32,924 INFO L225 Difference]: With dead ends: 60 [2024-11-16 02:20:32,924 INFO L226 Difference]: Without dead ends: 42 [2024-11-16 02:20:32,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:20:32,925 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:32,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:20:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-16 02:20:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-16 02:20:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 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) [2024-11-16 02:20:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-16 02:20:32,931 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 22 [2024-11-16 02:20:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:32,931 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-16 02:20:32,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-16 02:20:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 02:20:32,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:32,932 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:32,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:20:33,133 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 [2024-11-16 02:20:33,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:33,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2141004854, now seen corresponding path program 2 times [2024-11-16 02:20:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422940213] [2024-11-16 02:20:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:20:33,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:33,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422940213] [2024-11-16 02:20:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422940213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:20:33,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278117781] [2024-11-16 02:20:33,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:20:33,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:33,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:33,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:20:33,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:20:33,397 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:20:33,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:20:33,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:20:33,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:20:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:20:33,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:20:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 02:20:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278117781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:20:33,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:20:33,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:20:33,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424940916] [2024-11-16 02:20:33,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:20:33,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:20:33,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:20:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:20:33,523 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2024-11-16 02:20:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:33,610 INFO L93 Difference]: Finished difference Result 108 states and 131 transitions. [2024-11-16 02:20:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:20:33,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 40 [2024-11-16 02:20:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:33,612 INFO L225 Difference]: With dead ends: 108 [2024-11-16 02:20:33,612 INFO L226 Difference]: Without dead ends: 78 [2024-11-16 02:20:33,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:20:33,613 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:33,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 78 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:20:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-16 02:20:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-16 02:20:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2024-11-16 02:20:33,628 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 40 [2024-11-16 02:20:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:33,628 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2024-11-16 02:20:33,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2024-11-16 02:20:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2024-11-16 02:20:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 02:20:33,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:33,631 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:33,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:20:33,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:20:33,832 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:33,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1395841540, now seen corresponding path program 3 times [2024-11-16 02:20:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791721580] [2024-11-16 02:20:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-16 02:20:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791721580] [2024-11-16 02:20:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791721580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:20:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614588977] [2024-11-16 02:20:34,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:20:34,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:34,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:34,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:20:34,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:20:34,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 02:20:34,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:20:34,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 02:20:34,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:20:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 02:20:34,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:20:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 02:20:34,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614588977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:20:34,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:20:34,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2024-11-16 02:20:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574063768] [2024-11-16 02:20:34,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:20:34,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:20:34,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:34,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:20:34,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=327, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:20:34,873 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:35,001 INFO L93 Difference]: Finished difference Result 204 states and 245 transitions. [2024-11-16 02:20:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:20:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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 76 [2024-11-16 02:20:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:35,002 INFO L225 Difference]: With dead ends: 204 [2024-11-16 02:20:35,002 INFO L226 Difference]: Without dead ends: 150 [2024-11-16 02:20:35,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:20:35,004 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:35,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 129 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:20:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-16 02:20:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-16 02:20:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2024-11-16 02:20:35,013 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 76 [2024-11-16 02:20:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:35,014 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2024-11-16 02:20:35,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2024-11-16 02:20:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-16 02:20:35,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:35,018 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:35,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:20:35,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:35,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:35,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash -511600776, now seen corresponding path program 4 times [2024-11-16 02:20:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568599319] [2024-11-16 02:20:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-16 02:20:35,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568599319] [2024-11-16 02:20:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568599319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:20:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105667127] [2024-11-16 02:20:35,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:20:35,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:35,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:20:35,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:20:36,055 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:20:36,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:20:36,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:20:36,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:20:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-16 02:20:36,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:20:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-16 02:20:36,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105667127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:20:36,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:20:36,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 02:20:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631206016] [2024-11-16 02:20:36,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:20:36,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:20:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:20:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:20:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:20:36,775 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:20:37,124 INFO L93 Difference]: Finished difference Result 396 states and 473 transitions. [2024-11-16 02:20:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:20:37,125 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 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 148 [2024-11-16 02:20:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:20:37,127 INFO L225 Difference]: With dead ends: 396 [2024-11-16 02:20:37,127 INFO L226 Difference]: Without dead ends: 294 [2024-11-16 02:20:37,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:20:37,128 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 354 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:20:37,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 201 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:20:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-16 02:20:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-11-16 02:20:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0136518771331058) internal successors, (297), 293 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 297 transitions. [2024-11-16 02:20:37,152 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 297 transitions. Word has length 148 [2024-11-16 02:20:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:20:37,152 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 297 transitions. [2024-11-16 02:20:37,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:20:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 297 transitions. [2024-11-16 02:20:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-16 02:20:37,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:20:37,161 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:20:37,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:20:37,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:37,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:20:37,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:20:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2053641824, now seen corresponding path program 5 times [2024-11-16 02:20:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:20:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017014113] [2024-11-16 02:20:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:20:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:20:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:20:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-16 02:20:39,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:20:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017014113] [2024-11-16 02:20:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017014113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:20:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453616636] [2024-11-16 02:20:39,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:20:39,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:20:39,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:20:39,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:20:39,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process