./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.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 0bd598c6ab4eb0f85d075cd68c94871d585d0d9cc55a581ea912a4da97c7f3b7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 16:06:41,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 16:06:41,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 16:06:41,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 16:06:41,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 16:06:41,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 16:06:41,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 16:06:41,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 16:06:41,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 16:06:41,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 16:06:41,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 16:06:41,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 16:06:41,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 16:06:41,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 16:06:41,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 16:06:41,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 16:06:41,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 16:06:41,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 16:06:41,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 16:06:41,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 16:06:41,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 16:06:41,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 16:06:41,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 16:06:41,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 16:06:41,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 16:06:41,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 16:06:41,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 16:06:41,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:06:41,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 16:06:41,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 16:06:41,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 16:06:41,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 16:06:41,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 16:06:41,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 16:06:41,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 16:06:41,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 16:06:41,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 16:06:41,606 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bd598c6ab4eb0f85d075cd68c94871d585d0d9cc55a581ea912a4da97c7f3b7 [2024-11-16 16:06:41,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 16:06:41,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 16:06:41,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 16:06:41,824 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 16:06:41,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 16:06:41,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.i [2024-11-16 16:06:43,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 16:06:43,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 16:06:43,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.i [2024-11-16 16:06:43,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e5dff06/29273d19150044e2b6ed40b0a04bb8e2/FLAG371b16d55 [2024-11-16 16:06:43,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e5dff06/29273d19150044e2b6ed40b0a04bb8e2 [2024-11-16 16:06:43,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 16:06:43,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 16:06:43,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 16:06:43,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 16:06:43,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 16:06:43,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:43" (1/1) ... [2024-11-16 16:06:43,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce915cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:43, skipping insertion in model container [2024-11-16 16:06:43,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:43" (1/1) ... [2024-11-16 16:06:43,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 16:06:43,820 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.i[916,929] [2024-11-16 16:06:43,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:06:43,916 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 16:06:43,926 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-97.i[916,929] [2024-11-16 16:06:44,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:06:44,025 INFO L204 MainTranslator]: Completed translation [2024-11-16 16:06:44,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44 WrapperNode [2024-11-16 16:06:44,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 16:06:44,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 16:06:44,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 16:06:44,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 16:06:44,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,102 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2024-11-16 16:06:44,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 16:06:44,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 16:06:44,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 16:06:44,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 16:06:44,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,132 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 16:06:44,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,143 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 16:06:44,150 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 16:06:44,150 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 16:06:44,150 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 16:06:44,151 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (1/1) ... [2024-11-16 16:06:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:06:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:06:44,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 16:06:44,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 16:06:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 16:06:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 16:06:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 16:06:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 16:06:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 16:06:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 16:06:44,277 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 16:06:44,278 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 16:06:44,608 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-16 16:06:44,609 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 16:06:44,623 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 16:06:44,623 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 16:06:44,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:44 BoogieIcfgContainer [2024-11-16 16:06:44,624 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 16:06:44,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 16:06:44,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 16:06:44,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 16:06:44,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:06:43" (1/3) ... [2024-11-16 16:06:44,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac1f69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:44, skipping insertion in model container [2024-11-16 16:06:44,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:44" (2/3) ... [2024-11-16 16:06:44,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac1f69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:44, skipping insertion in model container [2024-11-16 16:06:44,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:44" (3/3) ... [2024-11-16 16:06:44,631 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-97.i [2024-11-16 16:06:44,643 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 16:06:44,643 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 16:06:44,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 16:06:44,687 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;@5ff19233, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 16:06:44,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 16:06:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-16 16:06:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 16:06:44,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:06:44,701 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:06:44,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:06:44,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:06:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 609625573, now seen corresponding path program 1 times [2024-11-16 16:06:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:06:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495356572] [2024-11-16 16:06:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:06:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:06:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:06:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:06:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:06:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:06:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:06:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:44,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:06:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 16:06:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 16:06:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 16:06:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 16:06:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 16:06:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:06:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 16:06:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:06:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 16:06:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 16:06:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 16:06:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-16 16:06:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-16 16:06:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-16 16:06:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 16:06:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 16:06:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-16 16:06:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-16 16:06:45,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:06:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495356572] [2024-11-16 16:06:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495356572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:06:45,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:06:45,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 16:06:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21873921] [2024-11-16 16:06:45,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:06:45,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 16:06:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:06:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 16:06:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:06:45,072 INFO L87 Difference]: Start difference. First operand has 84 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-16 16:06:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:06:45,097 INFO L93 Difference]: Finished difference Result 164 states and 280 transitions. [2024-11-16 16:06:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 16:06:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 161 [2024-11-16 16:06:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:06:45,106 INFO L225 Difference]: With dead ends: 164 [2024-11-16 16:06:45,106 INFO L226 Difference]: Without dead ends: 79 [2024-11-16 16:06:45,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:06:45,111 INFO L432 NwaCegarLoop]: 126 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, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:06:45,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:06:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-16 16:06:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-16 16:06:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-16 16:06:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 122 transitions. [2024-11-16 16:06:45,154 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 122 transitions. Word has length 161 [2024-11-16 16:06:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:06:45,154 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 122 transitions. [2024-11-16 16:06:45,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-16 16:06:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 122 transitions. [2024-11-16 16:06:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 16:06:45,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:06:45,159 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:06:45,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 16:06:45,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:06:45,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:06:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1682406113, now seen corresponding path program 1 times [2024-11-16 16:06:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:06:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051014482] [2024-11-16 16:06:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:06:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:06:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:06:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:06:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:06:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:06:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:06:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:06:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 16:06:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 16:06:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 16:06:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 16:06:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 16:06:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:06:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 16:06:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:06:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 16:06:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 16:06:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 16:06:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-16 16:06:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-16 16:06:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-16 16:06:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 16:06:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 16:06:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-16 16:06:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-16 16:06:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:06:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051014482] [2024-11-16 16:06:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051014482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:06:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:06:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 16:06:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666900589] [2024-11-16 16:06:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:06:45,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 16:06:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:06:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 16:06:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:06:45,443 INFO L87 Difference]: Start difference. First operand 79 states and 122 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-16 16:06:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:06:45,513 INFO L93 Difference]: Finished difference Result 222 states and 344 transitions. [2024-11-16 16:06:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 16:06:45,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 161 [2024-11-16 16:06:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:06:45,516 INFO L225 Difference]: With dead ends: 222 [2024-11-16 16:06:45,516 INFO L226 Difference]: Without dead ends: 146 [2024-11-16 16:06:45,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:06:45,520 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 98 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:06:45,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 305 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:06:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-16 16:06:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 89. [2024-11-16 16:06:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-16 16:06:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2024-11-16 16:06:45,544 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 138 transitions. Word has length 161 [2024-11-16 16:06:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:06:45,546 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 138 transitions. [2024-11-16 16:06:45,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-16 16:06:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 138 transitions. [2024-11-16 16:06:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 16:06:45,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:06:45,551 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:06:45,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 16:06:45,552 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:06:45,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:06:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1553282596, now seen corresponding path program 1 times [2024-11-16 16:06:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:06:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237711705] [2024-11-16 16:06:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:06:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 16:06:45,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150899171] [2024-11-16 16:06:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:45,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 16:06:45,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:06:45,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 16:06:45,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 16:06:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:46,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 16:06:46,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 16:06:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 528 proven. 105 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2024-11-16 16:06:47,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 16:07:41,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:07:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237711705] [2024-11-16 16:07:41,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 16:07:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150899171] [2024-11-16 16:07:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150899171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 16:07:41,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 16:07:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-16 16:07:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033854846] [2024-11-16 16:07:41,590 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 16:07:41,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 16:07:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:07:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 16:07:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=134, Unknown=13, NotChecked=0, Total=182 [2024-11-16 16:07:41,594 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)