./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_running-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-2.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 b155d36c818668577415bbab4913364c1907de6bd1c1c9e0d185f4f2f125b180 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:56:24,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:56:24,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:56:24,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:56:24,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:56:24,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:56:24,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:56:24,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:56:24,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:56:24,439 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:56:24,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:56:24,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:56:24,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:56:24,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:56:24,441 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:56:24,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:56:24,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:56:24,442 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:56:24,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:56:24,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:56:24,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:56:24,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:56:24,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:56:24,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:56:24,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:56:24,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:56:24,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:56:24,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:56:24,446 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:56:24,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:56:24,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:56:24,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:56:24,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:56:24,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:56:24,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:56:24,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:56:24,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:56:24,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:56:24,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:56:24,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:56:24,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:56:24,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:56:24,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b155d36c818668577415bbab4913364c1907de6bd1c1c9e0d185f4f2f125b180 [2024-11-09 17:56:24,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:56:24,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:56:24,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:56:24,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:56:24,634 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:56:24,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-2.i [2024-11-09 17:56:25,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:56:26,123 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:56:26,125 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-2.i [2024-11-09 17:56:26,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be4cbd66/44d3fcb174f14dcf922b33f82546b7ff/FLAG2f50dd8d8 [2024-11-09 17:56:26,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be4cbd66/44d3fcb174f14dcf922b33f82546b7ff [2024-11-09 17:56:26,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:56:26,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:56:26,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:56:26,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:56:26,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:56:26,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37deaee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26, skipping insertion in model container [2024-11-09 17:56:26,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,545 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:56:26,690 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-2.i[811,824] [2024-11-09 17:56:26,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:56:26,712 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:56:26,720 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-2.i[811,824] [2024-11-09 17:56:26,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:56:26,737 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:56:26,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26 WrapperNode [2024-11-09 17:56:26,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:56:26,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:56:26,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:56:26,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:56:26,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,766 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-09 17:56:26,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:56:26,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:56:26,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:56:26,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:56:26,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,788 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, 1, 2]. [2024-11-09 17:56:26,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:56:26,795 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:56:26,795 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:56:26,795 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:56:26,796 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (1/1) ... [2024-11-09 17:56:26,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:56:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:26,821 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) [2024-11-09 17:56:26,823 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 [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:56:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:56:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 17:56:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:56:26,917 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:56:26,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:56:27,025 INFO L1247 $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; [2024-11-09 17:56:27,034 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 17:56:27,035 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:56:27,045 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:56:27,045 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:56:27,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:56:27 BoogieIcfgContainer [2024-11-09 17:56:27,046 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:56:27,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:56:27,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:56:27,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:56:27,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:56:26" (1/3) ... [2024-11-09 17:56:27,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac7f1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:56:27, skipping insertion in model container [2024-11-09 17:56:27,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:26" (2/3) ... [2024-11-09 17:56:27,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac7f1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:56:27, skipping insertion in model container [2024-11-09 17:56:27,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:56:27" (3/3) ... [2024-11-09 17:56:27,052 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2024-11-09 17:56:27,066 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:56:27,067 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:56:27,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:56:27,119 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;@2103b129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:56:27,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:56:27,122 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) [2024-11-09 17:56:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 17:56:27,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:27,127 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:56:27,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:27,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1149968474, now seen corresponding path program 1 times [2024-11-09 17:56:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663781950] [2024-11-09 17:56:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:56:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:27,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663781950] [2024-11-09 17:56:27,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663781950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:56:27,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:56:27,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:56:27,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011973511] [2024-11-09 17:56:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:56:27,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:56:27,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:56:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:56:27,286 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) [2024-11-09 17:56:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:27,296 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-09 17:56:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:56:27,297 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 [2024-11-09 17:56:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:27,302 INFO L225 Difference]: With dead ends: 51 [2024-11-09 17:56:27,303 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 17:56:27,305 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 [2024-11-09 17:56:27,307 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 [2024-11-09 17:56:27,308 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] [2024-11-09 17:56:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 17:56:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 17:56:27,328 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) [2024-11-09 17:56:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-09 17:56:27,329 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2024-11-09 17:56:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:27,330 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-09 17:56:27,330 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) [2024-11-09 17:56:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-09 17:56:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 17:56:27,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:27,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:56:27,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:56:27,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:27,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1319342064, now seen corresponding path program 1 times [2024-11-09 17:56:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739554040] [2024-11-09 17:56:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:56:27,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739554040] [2024-11-09 17:56:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739554040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:56:27,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:56:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:56:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512929927] [2024-11-09 17:56:27,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:56:27,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:56:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:56:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:56:27,423 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) [2024-11-09 17:56:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:27,522 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-11-09 17:56:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:56:27,522 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 [2024-11-09 17:56:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:27,523 INFO L225 Difference]: With dead ends: 56 [2024-11-09 17:56:27,524 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 17:56:27,525 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 [2024-11-09 17:56:27,526 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:27,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:56:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 17:56:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2024-11-09 17:56:27,533 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) [2024-11-09 17:56:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-09 17:56:27,534 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-11-09 17:56:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:27,534 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-09 17:56:27,535 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) [2024-11-09 17:56:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-09 17:56:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 17:56:27,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:27,536 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] [2024-11-09 17:56:27,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:56:27,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:27,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1975779691, now seen corresponding path program 1 times [2024-11-09 17:56:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213357537] [2024-11-09 17:56:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:56:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213357537] [2024-11-09 17:56:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213357537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132356888] [2024-11-09 17:56:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:27,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:27,671 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) [2024-11-09 17:56:27,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:56:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:27,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:56:27,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:56:27,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:56:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132356888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:27,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:27,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:56:27,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023962395] [2024-11-09 17:56:27,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:27,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:56:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:56:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:56:27,815 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) [2024-11-09 17:56:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:27,885 INFO L93 Difference]: Finished difference Result 94 states and 131 transitions. [2024-11-09 17:56:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:56:27,886 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 [2024-11-09 17:56:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:27,887 INFO L225 Difference]: With dead ends: 94 [2024-11-09 17:56:27,887 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 17:56:27,887 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 [2024-11-09 17:56:27,888 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 105 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-11-09 17:56:27,888 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] [2024-11-09 17:56:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 17:56:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-09 17:56:27,893 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) [2024-11-09 17:56:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-11-09 17:56:27,894 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 28 [2024-11-09 17:56:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:27,894 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-11-09 17:56:27,894 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) [2024-11-09 17:56:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-11-09 17:56:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 17:56:27,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:27,896 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] [2024-11-09 17:56:27,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 17:56:28,096 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 [2024-11-09 17:56:28,097 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:28,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash 789378908, now seen corresponding path program 2 times [2024-11-09 17:56:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:28,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113389115] [2024-11-09 17:56:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 17:56:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113389115] [2024-11-09 17:56:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113389115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:56:28,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:56:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 17:56:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712354693] [2024-11-09 17:56:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:56:28,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 17:56:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 17:56:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:56:28,300 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:56:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:28,346 INFO L93 Difference]: Finished difference Result 127 states and 173 transitions. [2024-11-09 17:56:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:56:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 17:56:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:28,348 INFO L225 Difference]: With dead ends: 127 [2024-11-09 17:56:28,348 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 17:56:28,348 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 [2024-11-09 17:56:28,349 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:28,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:56:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 17:56:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 83. [2024-11-09 17:56:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 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) [2024-11-09 17:56:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-11-09 17:56:28,355 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 70 [2024-11-09 17:56:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:28,355 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-11-09 17:56:28,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:56:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-11-09 17:56:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 17:56:28,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:28,356 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] [2024-11-09 17:56:28,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 17:56:28,357 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:28,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -55455528, now seen corresponding path program 1 times [2024-11-09 17:56:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416450338] [2024-11-09 17:56:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 17:56:28,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:28,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416450338] [2024-11-09 17:56:28,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416450338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:56:28,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:56:28,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 17:56:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91647021] [2024-11-09 17:56:28,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:56:28,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 17:56:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 17:56:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:56:28,522 INFO L87 Difference]: Start difference. First operand 83 states and 109 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) [2024-11-09 17:56:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:28,572 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2024-11-09 17:56:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:56:28,575 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 [2024-11-09 17:56:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:28,576 INFO L225 Difference]: With dead ends: 146 [2024-11-09 17:56:28,576 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 17:56:28,576 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 [2024-11-09 17:56:28,577 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:28,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:56:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 17:56:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2024-11-09 17:56:28,586 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) [2024-11-09 17:56:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-11-09 17:56:28,587 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 70 [2024-11-09 17:56:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:28,589 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-11-09 17:56:28,589 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) [2024-11-09 17:56:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-11-09 17:56:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 17:56:28,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:28,591 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] [2024-11-09 17:56:28,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 17:56:28,591 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:28,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -475519268, now seen corresponding path program 1 times [2024-11-09 17:56:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523525917] [2024-11-09 17:56:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 17:56:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:28,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523525917] [2024-11-09 17:56:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523525917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:28,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497902601] [2024-11-09 17:56:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:28,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:28,736 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) [2024-11-09 17:56:28,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:56:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:28,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:56:28,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 17:56:28,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 17:56:28,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497902601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:28,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:28,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 17:56:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143472115] [2024-11-09 17:56:28,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:28,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 17:56:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:28,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 17:56:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:56:28,928 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) [2024-11-09 17:56:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:29,079 INFO L93 Difference]: Finished difference Result 270 states and 375 transitions. [2024-11-09 17:56:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 17:56:29,079 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 [2024-11-09 17:56:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:29,081 INFO L225 Difference]: With dead ends: 270 [2024-11-09 17:56:29,081 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 17:56:29,082 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 [2024-11-09 17:56:29,083 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 405 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:29,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 114 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:56:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 17:56:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-09 17:56:29,097 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) [2024-11-09 17:56:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2024-11-09 17:56:29,099 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 70 [2024-11-09 17:56:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:29,099 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2024-11-09 17:56:29,099 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) [2024-11-09 17:56:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2024-11-09 17:56:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 17:56:29,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:29,103 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] [2024-11-09 17:56:29,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 17:56:29,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 17:56:29,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:29,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 215191742, now seen corresponding path program 2 times [2024-11-09 17:56:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668504484] [2024-11-09 17:56:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-09 17:56:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:29,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668504484] [2024-11-09 17:56:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668504484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52644282] [2024-11-09 17:56:29,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:56:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:29,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:29,660 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) [2024-11-09 17:56:29,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:56:29,771 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:56:29,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:56:29,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 17:56:29,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-09 17:56:29,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-09 17:56:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52644282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:29,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 17:56:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463873274] [2024-11-09 17:56:29,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:29,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 17:56:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 17:56:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 17:56:30,000 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) [2024-11-09 17:56:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:30,358 INFO L93 Difference]: Finished difference Result 582 states and 813 transitions. [2024-11-09 17:56:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 17:56:30,359 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 [2024-11-09 17:56:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:30,360 INFO L225 Difference]: With dead ends: 582 [2024-11-09 17:56:30,360 INFO L226 Difference]: Without dead ends: 411 [2024-11-09 17:56:30,361 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 [2024-11-09 17:56:30,364 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 900 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:30,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 232 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 17:56:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-09 17:56:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2024-11-09 17:56:30,389 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) [2024-11-09 17:56:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 545 transitions. [2024-11-09 17:56:30,390 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 545 transitions. Word has length 154 [2024-11-09 17:56:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:30,390 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 545 transitions. [2024-11-09 17:56:30,391 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) [2024-11-09 17:56:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 545 transitions. [2024-11-09 17:56:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-09 17:56:30,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:30,397 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] [2024-11-09 17:56:30,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 17:56:30,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:30,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:30,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1345126274, now seen corresponding path program 3 times [2024-11-09 17:56:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:30,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448015276] [2024-11-09 17:56:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2024-11-09 17:56:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448015276] [2024-11-09 17:56:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448015276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083026640] [2024-11-09 17:56:31,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:56:31,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:31,535 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) [2024-11-09 17:56:31,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:56:31,649 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 17:56:31,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:56:31,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 17:56:31,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:31,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 17:56:32,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 17:56:32,089 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 [2024-11-09 17:56:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 107 proven. 149 refuted. 0 times theorem prover too weak. 3110 trivial. 0 not checked. [2024-11-09 17:56:32,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:32,637 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 [2024-11-09 17:56:32,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 17:56:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 86 proven. 170 refuted. 0 times theorem prover too weak. 3110 trivial. 0 not checked. [2024-11-09 17:56:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083026640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:32,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:32,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 37 [2024-11-09 17:56:32,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031095543] [2024-11-09 17:56:32,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:32,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 17:56:32,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 17:56:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=818, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 17:56:32,666 INFO L87 Difference]: Start difference. First operand 411 states and 545 transitions. Second operand has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 37 states have internal predecessors, (116), 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) [2024-11-09 17:56:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:34,834 INFO L93 Difference]: Finished difference Result 1235 states and 1685 transitions. [2024-11-09 17:56:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-09 17:56:34,835 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 37 states have internal predecessors, (116), 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 [2024-11-09 17:56:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:34,839 INFO L225 Difference]: With dead ends: 1235 [2024-11-09 17:56:34,840 INFO L226 Difference]: Without dead ends: 872 [2024-11-09 17:56:34,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 629 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3154 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3676, Invalid=8534, Unknown=0, NotChecked=0, Total=12210 [2024-11-09 17:56:34,846 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3168 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:34,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 332 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 17:56:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-09 17:56:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 771. [2024-11-09 17:56:34,866 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) [2024-11-09 17:56:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1050 transitions. [2024-11-09 17:56:34,868 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1050 transitions. Word has length 322 [2024-11-09 17:56:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:34,868 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1050 transitions. [2024-11-09 17:56:34,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 37 states have internal predecessors, (116), 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) [2024-11-09 17:56:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1050 transitions. [2024-11-09 17:56:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-09 17:56:34,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:34,876 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] [2024-11-09 17:56:34,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:56:35,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:35,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:35,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -409216108, now seen corresponding path program 1 times [2024-11-09 17:56:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626131806] [2024-11-09 17:56:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-09 17:56:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626131806] [2024-11-09 17:56:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626131806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318788563] [2024-11-09 17:56:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:36,010 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) [2024-11-09 17:56:36,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 17:56:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:36,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 17:56:36,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-09 17:56:36,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4350 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2024-11-09 17:56:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318788563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:37,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:37,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-11-09 17:56:37,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976906304] [2024-11-09 17:56:37,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:37,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-09 17:56:37,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-09 17:56:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 17:56:37,056 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) [2024-11-09 17:56:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:38,014 INFO L93 Difference]: Finished difference Result 2715 states and 3704 transitions. [2024-11-09 17:56:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-09 17:56:38,015 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 [2024-11-09 17:56:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:38,052 INFO L225 Difference]: With dead ends: 2715 [2024-11-09 17:56:38,052 INFO L226 Difference]: Without dead ends: 1998 [2024-11-09 17:56:38,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 17:56:38,055 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2490 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:38,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2490 Valid, 512 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 17:56:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2024-11-09 17:56:38,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1581. [2024-11-09 17:56:38,079 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) [2024-11-09 17:56:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2157 transitions. [2024-11-09 17:56:38,082 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2157 transitions. Word has length 364 [2024-11-09 17:56:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:38,082 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2157 transitions. [2024-11-09 17:56:38,082 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) [2024-11-09 17:56:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2157 transitions. [2024-11-09 17:56:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2024-11-09 17:56:38,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:38,091 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] [2024-11-09 17:56:38,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 17:56:38,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:38,293 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:38,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1276042067, now seen corresponding path program 2 times [2024-11-09 17:56:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861482530] [2024-11-09 17:56:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:56:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-09 17:56:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:56:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861482530] [2024-11-09 17:56:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861482530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:56:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761389270] [2024-11-09 17:56:41,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:56:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:41,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:56:41,537 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) [2024-11-09 17:56:41,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 17:56:41,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:56:41,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:56:41,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 17:56:41,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:56:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-09 17:56:42,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:56:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18876 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2024-11-09 17:56:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761389270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:56:44,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:56:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 109 [2024-11-09 17:56:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504775946] [2024-11-09 17:56:44,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:56:44,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-09 17:56:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:56:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-09 17:56:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 17:56:44,755 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) [2024-11-09 17:56:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:56:50,509 INFO L93 Difference]: Finished difference Result 5496 states and 7511 transitions. [2024-11-09 17:56:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-09 17:56:50,510 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 [2024-11-09 17:56:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:56:50,519 INFO L225 Difference]: With dead ends: 5496 [2024-11-09 17:56:50,520 INFO L226 Difference]: Without dead ends: 4023 [2024-11-09 17:56:50,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 17:56:50,525 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6720 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6720 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 17:56:50,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6720 Valid, 1002 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 17:56:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2024-11-09 17:56:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3201. [2024-11-09 17:56:50,641 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) [2024-11-09 17:56:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4371 transitions. [2024-11-09 17:56:50,649 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4371 transitions. Word has length 742 [2024-11-09 17:56:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:56:50,651 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4371 transitions. [2024-11-09 17:56:50,651 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) [2024-11-09 17:56:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4371 transitions. [2024-11-09 17:56:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1499 [2024-11-09 17:56:50,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:56:50,695 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] [2024-11-09 17:56:50,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 17:56:50,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:56:50,900 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:56:50,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:56:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -599283297, now seen corresponding path program 3 times [2024-11-09 17:56:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:56:50,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142957311] [2024-11-09 17:56:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:56:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:56:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:57:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 78546 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 67204 trivial. 0 not checked. [2024-11-09 17:57:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:57:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142957311] [2024-11-09 17:57:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142957311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:57:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300916599] [2024-11-09 17:57:04,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:57:04,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:57:04,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:57:04,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:57:04,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 17:57:04,855 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 17:57:04,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:57:04,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 17:57:04,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:57:04,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 17:57:05,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-09 17:57:08,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 17:57:08,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2024-11-09 17:57:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 78546 backedges. 734 proven. 1574 refuted. 0 times theorem prover too weak. 76238 trivial. 0 not checked. [2024-11-09 17:57:08,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:57:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 78546 backedges. 733 proven. 1575 refuted. 0 times theorem prover too weak. 76238 trivial. 0 not checked. [2024-11-09 17:57:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300916599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:57:10,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:57:10,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 13, 12] total 128 [2024-11-09 17:57:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124125928] [2024-11-09 17:57:10,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:57:10,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-09 17:57:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:57:10,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-09 17:57:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7257, Invalid=8999, Unknown=0, NotChecked=0, Total=16256 [2024-11-09 17:57:10,347 INFO L87 Difference]: Start difference. First operand 3201 states and 4371 transitions. Second operand has 128 states, 128 states have (on average 2.375) internal successors, (304), 128 states have internal predecessors, (304), 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)