./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_running-1.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_running-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:24:24,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:24:24,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:24:24,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:24:24,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:24:24,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:24:24,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:24:24,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:24:24,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:24:24,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:24:24,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:24:24,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:24:24,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:24:24,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:24:24,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:24:24,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:24:24,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:24:24,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:24:24,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:24:24,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:24:24,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:24:24,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:24:24,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:24:24,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:24:24,151 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:24:24,151 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:24:24,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:24:24,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:24:24,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:24:24,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:24:24,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:24:24,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:24:24,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:24,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:24:24,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:24:24,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:24:24,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:24:24,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 [2024-11-16 02:24:24,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:24:24,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:24:24,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:24:24,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:24:24,420 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:24:24,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-16 02:24:25,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:24:25,824 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:24:25,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-16 02:24:25,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dd537d/7e4024a8d57742e2af053f25e25fd64f/FLAGfb90caffa [2024-11-16 02:24:25,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dd537d/7e4024a8d57742e2af053f25e25fd64f [2024-11-16 02:24:25,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:24:25,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:24:25,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:25,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:24:25,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:24:25,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:25" (1/1) ... [2024-11-16 02:24:25,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5d516e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:25, skipping insertion in model container [2024-11-16 02:24:25,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:25" (1/1) ... [2024-11-16 02:24:25,872 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:24:26,010 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_running-1.i[811,824] [2024-11-16 02:24:26,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:26,027 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:24:26,037 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_running-1.i[811,824] [2024-11-16 02:24:26,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:26,055 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:24:26,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26 WrapperNode [2024-11-16 02:24:26,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:26,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:26,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:24:26,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:24:26,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,079 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-16 02:24:26,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:26,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:24:26,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:24:26,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:24:26,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,099 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 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, 2, 1]. [2024-11-16 02:24:26,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,103 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:24:26,107 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:24:26,107 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:24:26,107 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:24:26,108 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (1/1) ... [2024-11-16 02:24:26,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:26,132 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 02:24:26,136 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 02:24:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:24:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:24:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:24:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:24:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:24:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:24:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:24:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:24:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:24:26,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:24:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:24:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:24:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:24:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:24:26,244 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:24:26,246 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:24:26,404 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: 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 02:24:26,413 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-16 02:24:26,414 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:24:26,428 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:24:26,428 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:24:26,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:26 BoogieIcfgContainer [2024-11-16 02:24:26,428 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:24:26,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:24:26,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:24:26,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:24:26,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:24:25" (1/3) ... [2024-11-16 02:24:26,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c26ed27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:26, skipping insertion in model container [2024-11-16 02:24:26,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:26" (2/3) ... [2024-11-16 02:24:26,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c26ed27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:26, skipping insertion in model container [2024-11-16 02:24:26,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:26" (3/3) ... [2024-11-16 02:24:26,449 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2024-11-16 02:24:26,461 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:24:26,462 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:24:26,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:24:26,519 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;@62f2831d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:24:26,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:24:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 02:24:26,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:26,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:26,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:26,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1149968474, now seen corresponding path program 1 times [2024-11-16 02:24:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:26,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973325463] [2024-11-16 02:24:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:26,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:26,649 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 02:24:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973325463] [2024-11-16 02:24:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973325463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:26,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:26,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:24:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065745471] [2024-11-16 02:24:26,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:24:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:24:26,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:26,671 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:26,682 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-16 02:24:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:24:26,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 02:24:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:26,689 INFO L225 Difference]: With dead ends: 51 [2024-11-16 02:24:26,689 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 02:24:26,691 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 02:24:26,694 INFO L432 NwaCegarLoop]: 34 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, 34 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 02:24:26,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 02:24:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-16 02:24:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-16 02:24:26,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2024-11-16 02:24:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:26,715 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-16 02:24:26,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-16 02:24:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:24:26,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:26,716 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:26,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:24:26,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:26,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1319342064, now seen corresponding path program 1 times [2024-11-16 02:24:26,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016067738] [2024-11-16 02:24:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:26,779 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 02:24:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016067738] [2024-11-16 02:24:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016067738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:24:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306089486] [2024-11-16 02:24:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:26,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:26,782 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-16 02:24:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:26,829 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-11-16 02:24:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) Word has length 14 [2024-11-16 02:24:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:26,830 INFO L225 Difference]: With dead ends: 56 [2024-11-16 02:24:26,830 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 02:24:26,830 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 02:24:26,831 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:26,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 02:24:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2024-11-16 02:24:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-16 02:24:26,837 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-11-16 02:24:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:26,837 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-16 02:24:26,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-16 02:24:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-16 02:24:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:24:26,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:26,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:26,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:24:26,839 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:26,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1975779691, now seen corresponding path program 1 times [2024-11-16 02:24:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:26,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090337396] [2024-11-16 02:24:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:26,937 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 02:24:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090337396] [2024-11-16 02:24:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090337396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707228217] [2024-11-16 02:24:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:26,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:26,940 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 02:24:26,945 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 02:24:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:27,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:24:27,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:27,046 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 02:24:27,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:27,085 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 02:24:27,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707228217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:27,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:27,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:24:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976869724] [2024-11-16 02:24:27,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:27,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:24:27,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:24:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:27,087 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 02:24:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:27,191 INFO L93 Difference]: Finished difference Result 94 states and 131 transitions. [2024-11-16 02:24:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:24:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:27,193 INFO L225 Difference]: With dead ends: 94 [2024-11-16 02:24:27,194 INFO L226 Difference]: Without dead ends: 71 [2024-11-16 02:24:27,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 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 02:24:27,195 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 105 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:27,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 60 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-16 02:24:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-16 02:24:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 02:24:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-11-16 02:24:27,205 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 28 [2024-11-16 02:24:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:27,206 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-11-16 02:24:27,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 02:24:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-11-16 02:24:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 02:24:27,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:27,207 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:27,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:24:27,408 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 02:24:27,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:27,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 789378908, now seen corresponding path program 2 times [2024-11-16 02:24:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647068915] [2024-11-16 02:24:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 02:24:27,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:27,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647068915] [2024-11-16 02:24:27,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647068915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:27,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:27,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:24:27,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635942603] [2024-11-16 02:24:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:27,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:24:27,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:24:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:24:27,836 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 02:24:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:27,929 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2024-11-16 02:24:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 70 [2024-11-16 02:24:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:27,930 INFO L225 Difference]: With dead ends: 128 [2024-11-16 02:24:27,931 INFO L226 Difference]: Without dead ends: 95 [2024-11-16 02:24:27,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 02:24:27,932 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:27,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-16 02:24:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2024-11-16 02:24:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.313953488372093) internal successors, (113), 86 states have internal predecessors, (113), 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 02:24:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-11-16 02:24:27,938 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 70 [2024-11-16 02:24:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:27,939 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-11-16 02:24:27,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 02:24:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-11-16 02:24:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 02:24:27,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:27,940 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:27,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:24:27,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:27,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -475519268, now seen corresponding path program 1 times [2024-11-16 02:24:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362087638] [2024-11-16 02:24:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 02:24:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362087638] [2024-11-16 02:24:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362087638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60886734] [2024-11-16 02:24:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:28,117 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 02:24:28,122 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 02:24:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:28,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:24:28,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 02:24:28,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 02:24:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60886734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:28,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:24:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133349190] [2024-11-16 02:24:28,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:28,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:24:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:24:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:24:28,299 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:28,462 INFO L93 Difference]: Finished difference Result 270 states and 375 transitions. [2024-11-16 02:24:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:24:28,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 02:24:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:28,463 INFO L225 Difference]: With dead ends: 270 [2024-11-16 02:24:28,465 INFO L226 Difference]: Without dead ends: 195 [2024-11-16 02:24:28,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 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 02:24:28,466 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 330 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:28,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 128 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-16 02:24:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-16 02:24:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.324742268041237) internal successors, (257), 194 states have internal predecessors, (257), 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 02:24:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2024-11-16 02:24:28,485 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 70 [2024-11-16 02:24:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:28,485 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2024-11-16 02:24:28,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2024-11-16 02:24:28,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-16 02:24:28,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:28,490 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:28,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:24:28,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:28,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:28,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 215191742, now seen corresponding path program 2 times [2024-11-16 02:24:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040069672] [2024-11-16 02:24:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-16 02:24:29,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:29,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040069672] [2024-11-16 02:24:29,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040069672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:29,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906502582] [2024-11-16 02:24:29,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:29,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:29,125 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 02:24:29,129 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 02:24:29,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:29,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:29,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:24:29,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-16 02:24:29,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-16 02:24:29,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906502582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:29,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:29,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 02:24:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165223892] [2024-11-16 02:24:29,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:29,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:24:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:24:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:24:29,588 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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 02:24:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:29,918 INFO L93 Difference]: Finished difference Result 582 states and 813 transitions. [2024-11-16 02:24:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:24:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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 154 [2024-11-16 02:24:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:29,921 INFO L225 Difference]: With dead ends: 582 [2024-11-16 02:24:29,921 INFO L226 Difference]: Without dead ends: 411 [2024-11-16 02:24:29,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:24:29,922 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 885 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:29,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 232 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:24:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-16 02:24:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2024-11-16 02:24:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.329268292682927) internal successors, (545), 410 states have internal predecessors, (545), 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 02:24:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 545 transitions. [2024-11-16 02:24:29,938 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 545 transitions. Word has length 154 [2024-11-16 02:24:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:29,938 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 545 transitions. [2024-11-16 02:24:29,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 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 02:24:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 545 transitions. [2024-11-16 02:24:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-16 02:24:29,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:29,942 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:29,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:24:30,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:30,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:30,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1345126274, now seen corresponding path program 3 times [2024-11-16 02:24:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460461005] [2024-11-16 02:24:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2024-11-16 02:24:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460461005] [2024-11-16 02:24:31,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460461005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5682652] [2024-11-16 02:24:31,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:31,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:31,127 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 02:24:31,131 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 02:24:31,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:24:31,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:31,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:24:31,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:31,323 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 23 treesize of output 1 [2024-11-16 02:24:31,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:24:31,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-11-16 02:24:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 107 proven. 149 refuted. 0 times theorem prover too weak. 3110 trivial. 0 not checked. [2024-11-16 02:24:31,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:32,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:24:32,337 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 20 treesize of output 16 [2024-11-16 02:24:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 86 proven. 170 refuted. 0 times theorem prover too weak. 3110 trivial. 0 not checked. [2024-11-16 02:24:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5682652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:32,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:32,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 36 [2024-11-16 02:24:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915260429] [2024-11-16 02:24:32,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:32,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 02:24:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 02:24:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=752, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:24:32,367 INFO L87 Difference]: Start difference. First operand 411 states and 545 transitions. Second operand has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 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 02:24:36,380 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] [2024-11-16 02:24:42,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:46,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:50,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:54,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:58,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:02,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:06,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:08,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:12,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:16,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:20,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:24,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:27,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:31,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:32,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:36,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:25:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:39,180 INFO L93 Difference]: Finished difference Result 1235 states and 1685 transitions. [2024-11-16 02:25:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-16 02:25:39,180 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 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 322 [2024-11-16 02:25:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:39,184 INFO L225 Difference]: With dead ends: 1235 [2024-11-16 02:25:39,184 INFO L226 Difference]: Without dead ends: 872 [2024-11-16 02:25:39,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 629 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3154 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3644, Invalid=8346, Unknown=0, NotChecked=0, Total=11990 [2024-11-16 02:25:39,188 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2969 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 385 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:39,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 339 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 355 Invalid, 24 Unknown, 0 Unchecked, 65.0s Time] [2024-11-16 02:25:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-16 02:25:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 771. [2024-11-16 02:25:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.3636363636363635) internal successors, (1050), 770 states have internal predecessors, (1050), 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 02:25:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1050 transitions. [2024-11-16 02:25:39,210 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1050 transitions. Word has length 322 [2024-11-16 02:25:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:39,211 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1050 transitions. [2024-11-16 02:25:39,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 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 02:25:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1050 transitions. [2024-11-16 02:25:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-16 02:25:39,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:39,216 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:39,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:25:39,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:39,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:39,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash -409216108, now seen corresponding path program 1 times [2024-11-16 02:25:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:39,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250110467] [2024-11-16 02:25:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-16 02:25:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250110467] [2024-11-16 02:25:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250110467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776216247] [2024-11-16 02:25:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:40,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:40,398 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 02:25:40,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:25:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:40,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 02:25:40,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-16 02:25:40,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-16 02:25:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776216247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:41,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:41,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-11-16 02:25:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172775769] [2024-11-16 02:25:41,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:41,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-16 02:25:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-16 02:25:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:25:41,517 INFO L87 Difference]: Start difference. First operand 771 states and 1050 transitions. Second operand has 55 states, 55 states have (on average 2.381818181818182) internal successors, (131), 55 states have internal predecessors, (131), 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 02:25:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:42,616 INFO L93 Difference]: Finished difference Result 2715 states and 3704 transitions. [2024-11-16 02:25:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 02:25:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.381818181818182) internal successors, (131), 55 states have internal predecessors, (131), 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 364 [2024-11-16 02:25:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:42,622 INFO L225 Difference]: With dead ends: 2715 [2024-11-16 02:25:42,622 INFO L226 Difference]: Without dead ends: 1998 [2024-11-16 02:25:42,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:25:42,624 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2220 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:42,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 521 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:25:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2024-11-16 02:25:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1581. [2024-11-16 02:25:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.3651898734177215) internal successors, (2157), 1580 states have internal predecessors, (2157), 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 02:25:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2157 transitions. [2024-11-16 02:25:42,650 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2157 transitions. Word has length 364 [2024-11-16 02:25:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:42,650 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2157 transitions. [2024-11-16 02:25:42,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.381818181818182) internal successors, (131), 55 states have internal predecessors, (131), 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 02:25:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2157 transitions. [2024-11-16 02:25:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2024-11-16 02:25:42,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:42,659 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:42,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:25:42,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:42,860 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:42,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1276042067, now seen corresponding path program 2 times [2024-11-16 02:25:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:42,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985771849] [2024-11-16 02:25:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-16 02:25:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:45,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985771849] [2024-11-16 02:25:45,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985771849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:45,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320030543] [2024-11-16 02:25:45,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:25:45,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:45,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:45,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:25:45,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:25:46,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:25:46,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:25:46,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 02:25:46,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-16 02:25:46,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-16 02:25:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320030543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:49,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 109 [2024-11-16 02:25:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167604129] [2024-11-16 02:25:49,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-16 02:25:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-16 02:25:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2024-11-16 02:25:49,562 INFO L87 Difference]: Start difference. First operand 1581 states and 2157 transitions. Second operand has 109 states, 109 states have (on average 2.1926605504587156) internal successors, (239), 109 states have internal predecessors, (239), 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 02:25:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:57,258 INFO L93 Difference]: Finished difference Result 5496 states and 7511 transitions. [2024-11-16 02:25:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-16 02:25:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.1926605504587156) internal successors, (239), 109 states have internal predecessors, (239), 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 742 [2024-11-16 02:25:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:57,282 INFO L225 Difference]: With dead ends: 5496 [2024-11-16 02:25:57,282 INFO L226 Difference]: Without dead ends: 4023 [2024-11-16 02:25:57,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2024-11-16 02:25:57,287 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6255 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6255 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:57,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6255 Valid, 1007 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 02:25:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2024-11-16 02:25:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3201. [2024-11-16 02:25:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3200 states have (on average 1.3659375) internal successors, (4371), 3200 states have internal predecessors, (4371), 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 02:25:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4371 transitions. [2024-11-16 02:25:57,374 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4371 transitions. Word has length 742 [2024-11-16 02:25:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:57,374 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4371 transitions. [2024-11-16 02:25:57,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.1926605504587156) internal successors, (239), 109 states have internal predecessors, (239), 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 02:25:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4371 transitions. [2024-11-16 02:25:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1499 [2024-11-16 02:25:57,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:57,430 INFO L215 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:57,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:25:57,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:57,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:57,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -599283297, now seen corresponding path program 3 times [2024-11-16 02:25:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411232064] [2024-11-16 02:25:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat