./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c --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/nla-digbench-scaling/prodbin-ll_unwindbound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d87fab1dc6e9b3b1ef38291e10411689fc961abba4e105f2586cc8da9615d8a6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:51:54,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:51:54,774 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:51:54,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:51:54,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:51:54,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:51:54,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:51:54,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:51:54,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:51:54,818 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:51:54,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:51:54,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:51:54,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:51:54,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:51:54,822 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:51:54,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:51:54,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:51:54,823 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:51:54,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:51:54,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:51:54,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:51:54,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:51:54,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:51:54,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:51:54,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:51:54,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:51:54,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:51:54,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:51:54,827 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:51:54,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:51:54,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:51:54,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:51:54,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:51:54,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:51:54,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:51:54,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:51:54,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:51:54,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:51:54,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:51:54,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:51:54,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:51:54,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:51:54,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87fab1dc6e9b3b1ef38291e10411689fc961abba4e105f2586cc8da9615d8a6 [2024-11-09 22:51:55,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:51:55,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:51:55,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:51:55,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:51:55,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:51:55,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c [2024-11-09 22:51:56,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:51:56,694 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:51:56,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c [2024-11-09 22:51:56,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9183e480e/bd12ba395af542649db99b5db64a385b/FLAG148d325d4 [2024-11-09 22:51:57,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9183e480e/bd12ba395af542649db99b5db64a385b [2024-11-09 22:51:57,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:51:57,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:51:57,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:51:57,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:51:57,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:51:57,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e820a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57, skipping insertion in model container [2024-11-09 22:51:57,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:51:57,316 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/nla-digbench-scaling/prodbin-ll_unwindbound100.c[1263,1276] [2024-11-09 22:51:57,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:51:57,340 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:51:57,351 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/nla-digbench-scaling/prodbin-ll_unwindbound100.c[1263,1276] [2024-11-09 22:51:57,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:51:57,374 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:51:57,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57 WrapperNode [2024-11-09 22:51:57,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:51:57,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:51:57,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:51:57,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:51:57,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,411 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-09 22:51:57,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:51:57,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:51:57,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:51:57,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:51:57,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,447 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]. [2024-11-09 22:51:57,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,452 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:51:57,464 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:51:57,464 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:51:57,464 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:51:57,465 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (1/1) ... [2024-11-09 22:51:57,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:51:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:51:57,498 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 22:51:57,502 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 22:51:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:51:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:51:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:51:57,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:51:57,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:51:57,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:51:57,621 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:51:57,624 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:51:57,766 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-09 22:51:57,767 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:51:57,781 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:51:57,781 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:51:57,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:51:57 BoogieIcfgContainer [2024-11-09 22:51:57,782 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:51:57,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:51:57,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:51:57,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:51:57,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:51:57" (1/3) ... [2024-11-09 22:51:57,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2daec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:57, skipping insertion in model container [2024-11-09 22:51:57,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:57" (2/3) ... [2024-11-09 22:51:57,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2daec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:57, skipping insertion in model container [2024-11-09 22:51:57,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:51:57" (3/3) ... [2024-11-09 22:51:57,795 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound100.c [2024-11-09 22:51:57,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:51:57,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:51:57,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:51:57,868 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;@cc4ada7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:51:57,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:51:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:51:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 22:51:57,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:51:57,883 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:51:57,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:51:57,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:51:57,889 INFO L85 PathProgramCache]: Analyzing trace with hash 352010889, now seen corresponding path program 1 times [2024-11-09 22:51:57,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:51:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221805696] [2024-11-09 22:51:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:51:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:58,030 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 22:51:58,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:51:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221805696] [2024-11-09 22:51:58,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221805696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:51:58,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:51:58,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:51:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820240989] [2024-11-09 22:51:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:51:58,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:51:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:51:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:51:58,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:51:58,064 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:51:58,102 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-11-09 22:51:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:51:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 22:51:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:51:58,115 INFO L225 Difference]: With dead ends: 41 [2024-11-09 22:51:58,116 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 22:51:58,119 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 22:51:58,124 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:51:58,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:51:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 22:51:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 22:51:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:51:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-09 22:51:58,163 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2024-11-09 22:51:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:51:58,164 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-09 22:51:58,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-09 22:51:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:51:58,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:51:58,166 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:51:58,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:51:58,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:51:58,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:51:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 950111356, now seen corresponding path program 1 times [2024-11-09 22:51:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:51:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786039422] [2024-11-09 22:51:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:51:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:58,329 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 22:51:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:51:58,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786039422] [2024-11-09 22:51:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786039422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:51:58,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:51:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:51:58,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944691768] [2024-11-09 22:51:58,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:51:58,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:51:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:51:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:51:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:51:58,338 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:51:58,363 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-11-09 22:51:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:51:58,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:51:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:51:58,364 INFO L225 Difference]: With dead ends: 28 [2024-11-09 22:51:58,365 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 22:51:58,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:51:58,366 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:51:58,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:51:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 22:51:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 22:51:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:51:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-09 22:51:58,376 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2024-11-09 22:51:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:51:58,376 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-09 22:51:58,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-09 22:51:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:51:58,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:51:58,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:51:58,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:51:58,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:51:58,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:51:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 980587549, now seen corresponding path program 1 times [2024-11-09 22:51:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:51:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418254460] [2024-11-09 22:51:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:51:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:51:58,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931638158] [2024-11-09 22:51:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:51:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:51:58,406 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 22:51:58,408 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 22:51:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:58,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:51:58,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:51:58,705 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 22:51:58,705 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:51:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:51:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418254460] [2024-11-09 22:51:58,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:51:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931638158] [2024-11-09 22:51:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931638158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:51:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:51:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:51:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726876806] [2024-11-09 22:51:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:51:58,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:51:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:51:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:51:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:51:58,709 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:51:58,799 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-09 22:51:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:51:58,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:51:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:51:58,800 INFO L225 Difference]: With dead ends: 36 [2024-11-09 22:51:58,800 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 22:51:58,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:51:58,802 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:51:58,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 59 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:51:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 22:51:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-09 22:51:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:51:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-09 22:51:58,809 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2024-11-09 22:51:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:51:58,809 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-09 22:51:58,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:51:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-09 22:51:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:51:58,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:51:58,810 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:51:58,828 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 22:51:59,014 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 22:51:59,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:51:59,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:51:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1729072726, now seen corresponding path program 1 times [2024-11-09 22:51:59,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:51:59,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237677128] [2024-11-09 22:51:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:59,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:51:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:59,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 22:51:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:51:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:51:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237677128] [2024-11-09 22:51:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237677128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:51:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366548726] [2024-11-09 22:51:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:59,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:51:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:51:59,191 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 22:51:59,202 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 22:51:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:59,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 22:51:59,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:51:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:51:59,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:51:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:51:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366548726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:51:59,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:51:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-11-09 22:51:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257738199] [2024-11-09 22:51:59,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:51:59,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:51:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:51:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:51:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:51:59,376 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:51:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:51:59,454 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-09 22:51:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:51:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-09 22:51:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:51:59,456 INFO L225 Difference]: With dead ends: 66 [2024-11-09 22:51:59,456 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 22:51:59,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:51:59,458 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:51:59,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 91 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:51:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 22:51:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-11-09 22:51:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.275) internal successors, (51), 43 states have internal predecessors, (51), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 22:51:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-11-09 22:51:59,468 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 21 [2024-11-09 22:51:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:51:59,469 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-11-09 22:51:59,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:51:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-11-09 22:51:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:51:59,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:51:59,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:51:59,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:51:59,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 22:51:59,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:51:59,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:51:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1759548919, now seen corresponding path program 1 times [2024-11-09 22:51:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:51:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686453764] [2024-11-09 22:51:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:51:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:51:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112575144] [2024-11-09 22:51:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:51:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:51:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:51:59,712 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 22:51:59,714 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 22:51:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:51:59,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 22:51:59,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:52:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:52:00,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:52:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:52:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:52:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686453764] [2024-11-09 22:52:01,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:52:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112575144] [2024-11-09 22:52:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112575144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:52:01,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:52:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-11-09 22:52:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12313897] [2024-11-09 22:52:01,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:52:01,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:52:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:52:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:52:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:52:01,740 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:52:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:52:02,017 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2024-11-09 22:52:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 22:52:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 22:52:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:52:02,022 INFO L225 Difference]: With dead ends: 86 [2024-11-09 22:52:02,023 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 22:52:02,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:52:02,025 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:52:02,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:52:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 22:52:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-09 22:52:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 68 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 22:52:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-09 22:52:02,048 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 21 [2024-11-09 22:52:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:52:02,048 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-09 22:52:02,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:52:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-09 22:52:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:52:02,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:52:02,049 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:52:02,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:52:02,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:02,250 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:52:02,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:52:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -47905544, now seen corresponding path program 1 times [2024-11-09 22:52:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:52:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748818935] [2024-11-09 22:52:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:52:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:52:02,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935818916] [2024-11-09 22:52:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:52:02,270 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 22:52:02,277 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 22:52:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:52:02,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:52:02,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:52:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:52:02,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:52:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:52:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:52:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748818935] [2024-11-09 22:52:03,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:52:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935818916] [2024-11-09 22:52:03,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935818916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:52:03,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:52:03,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2024-11-09 22:52:03,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602132390] [2024-11-09 22:52:03,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:52:03,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:52:03,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:52:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:52:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:52:03,179 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:52:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:52:03,611 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2024-11-09 22:52:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 22:52:03,611 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 22:52:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:52:03,613 INFO L225 Difference]: With dead ends: 116 [2024-11-09 22:52:03,613 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 22:52:03,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:52:03,614 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:52:03,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 153 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:52:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 22:52:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2024-11-09 22:52:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 22:52:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-09 22:52:03,635 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 21 [2024-11-09 22:52:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:52:03,635 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-09 22:52:03,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:52:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-09 22:52:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 22:52:03,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:52:03,637 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:52:03,653 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 22:52:03,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:03,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:52:03,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:52:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1759204814, now seen corresponding path program 1 times [2024-11-09 22:52:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:52:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633628541] [2024-11-09 22:52:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:52:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:52:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213795658] [2024-11-09 22:52:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:03,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:52:03,860 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 22:52:03,862 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 22:52:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:52:03,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:52:03,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:52:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:52:03,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:52:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:52:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:52:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633628541] [2024-11-09 22:52:04,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:52:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213795658] [2024-11-09 22:52:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213795658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:52:04,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:52:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-11-09 22:52:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170757112] [2024-11-09 22:52:04,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:52:04,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:52:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:52:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:52:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:52:04,030 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:52:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:52:04,095 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2024-11-09 22:52:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:52:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-09 22:52:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:52:04,096 INFO L225 Difference]: With dead ends: 94 [2024-11-09 22:52:04,097 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 22:52:04,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:52:04,098 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:52:04,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:52:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 22:52:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-09 22:52:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 67 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 22:52:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2024-11-09 22:52:04,109 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 27 [2024-11-09 22:52:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:52:04,109 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2024-11-09 22:52:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:52:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2024-11-09 22:52:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:52:04,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:52:04,111 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:52:04,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 22:52:04,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:04,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:52:04,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:52:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash 673877804, now seen corresponding path program 1 times [2024-11-09 22:52:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:52:04,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290936540] [2024-11-09 22:52:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:04,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:52:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:52:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636683066] [2024-11-09 22:52:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:52:04,349 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 22:52:04,352 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 22:52:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:52:04,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 22:52:04,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:52:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:52:05,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:52:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 22:52:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:52:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290936540] [2024-11-09 22:52:15,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:52:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636683066] [2024-11-09 22:52:15,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636683066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:52:15,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:52:15,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-09 22:52:15,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353187647] [2024-11-09 22:52:15,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:52:15,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:52:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:52:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:52:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:52:15,799 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 22:52:25,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 22:52:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:52:25,963 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2024-11-09 22:52:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 22:52:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-09 22:52:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:52:25,965 INFO L225 Difference]: With dead ends: 125 [2024-11-09 22:52:25,965 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 22:52:25,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2024-11-09 22:52:25,966 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 22:52:25,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 246 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 298 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 22:52:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 22:52:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-09 22:52:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 100 states have internal predecessors, (109), 14 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 22:52:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2024-11-09 22:52:25,985 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 41 [2024-11-09 22:52:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:52:25,986 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2024-11-09 22:52:25,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 22:52:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2024-11-09 22:52:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:52:25,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:52:25,990 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:52:26,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 22:52:26,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:26,191 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:52:26,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:52:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash -170594067, now seen corresponding path program 2 times [2024-11-09 22:52:26,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:52:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6177727] [2024-11-09 22:52:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:52:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:52:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:52:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953996564] [2024-11-09 22:52:26,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:52:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:52:26,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:52:26,218 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 22:52:26,220 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 22:52:26,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:52:26,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:52:26,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:52:26,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:52:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:52:27,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:52:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:52:51,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:52:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6177727] [2024-11-09 22:52:51,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:52:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953996564] [2024-11-09 22:52:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953996564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:52:51,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:52:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 25 [2024-11-09 22:52:51,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938996838] [2024-11-09 22:52:51,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:52:51,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 22:52:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:52:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 22:52:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:52:51,688 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 23 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:52:55,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:53:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:53:17,276 INFO L93 Difference]: Finished difference Result 170 states and 204 transitions. [2024-11-09 22:53:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 22:53:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 23 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-09 22:53:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:53:17,278 INFO L225 Difference]: With dead ends: 170 [2024-11-09 22:53:17,278 INFO L226 Difference]: Without dead ends: 167 [2024-11-09 22:53:17,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2024-11-09 22:53:17,279 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-09 22:53:17,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 244 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-09 22:53:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-09 22:53:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2024-11-09 22:53:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 128 states have (on average 1.203125) internal successors, (154), 133 states have internal predecessors, (154), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 15 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-09 22:53:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 193 transitions. [2024-11-09 22:53:17,316 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 193 transitions. Word has length 41 [2024-11-09 22:53:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:53:17,317 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 193 transitions. [2024-11-09 22:53:17,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 23 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:53:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 193 transitions. [2024-11-09 22:53:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:53:17,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:53:17,319 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:53:17,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 22:53:17,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:53:17,520 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:53:17,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:53:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 50716900, now seen corresponding path program 2 times [2024-11-09 22:53:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:53:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000310021] [2024-11-09 22:53:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:53:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:53:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:53:17,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 22:53:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:53:17,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-09 22:53:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:53:17,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:53:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:53:17,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:53:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:53:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:53:17,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:53:17,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000310021] [2024-11-09 22:53:17,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000310021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:53:17,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531407689] [2024-11-09 22:53:17,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:53:17,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:53:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:53:17,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:53:17,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:53:17,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:53:17,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:53:17,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:53:17,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:53:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:53:17,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:53:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:53:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531407689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:53:17,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:53:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2024-11-09 22:53:17,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118992291] [2024-11-09 22:53:17,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:53:17,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:53:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:53:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:53:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:53:17,983 INFO L87 Difference]: Start difference. First operand 159 states and 193 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-09 22:53:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:53:18,143 INFO L93 Difference]: Finished difference Result 402 states and 472 transitions. [2024-11-09 22:53:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 22:53:18,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 51 [2024-11-09 22:53:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:53:18,146 INFO L225 Difference]: With dead ends: 402 [2024-11-09 22:53:18,146 INFO L226 Difference]: Without dead ends: 394 [2024-11-09 22:53:18,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:53:18,147 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:53:18,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:53:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-09 22:53:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 345. [2024-11-09 22:53:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 276 states have (on average 1.141304347826087) internal successors, (315), 283 states have internal predecessors, (315), 36 states have call successors, (36), 32 states have call predecessors, (36), 32 states have return successors, (35), 29 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-09 22:53:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 386 transitions. [2024-11-09 22:53:18,217 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 386 transitions. Word has length 51 [2024-11-09 22:53:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:53:18,217 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 386 transitions. [2024-11-09 22:53:18,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-09 22:53:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 386 transitions. [2024-11-09 22:53:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:53:18,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:53:18,219 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:53:18,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 22:53:18,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 22:53:18,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:53:18,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:53:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1494652169, now seen corresponding path program 2 times [2024-11-09 22:53:18,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:53:18,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427450745] [2024-11-09 22:53:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:53:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:53:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:53:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322137520] [2024-11-09 22:53:18,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:53:18,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:53:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:53:18,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:53:18,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:53:18,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:53:18,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:53:18,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 22:53:18,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:53:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:53:19,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:53:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:53:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427450745] [2024-11-09 22:53:21,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:53:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322137520] [2024-11-09 22:53:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322137520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:53:21,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:53:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-09 22:53:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832356570] [2024-11-09 22:53:21,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:53:21,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:53:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:53:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:53:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:53:21,743 INFO L87 Difference]: Start difference. First operand 345 states and 386 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 22:53:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:53:22,119 INFO L93 Difference]: Finished difference Result 348 states and 388 transitions. [2024-11-09 22:53:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:53:22,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2024-11-09 22:53:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:53:22,123 INFO L225 Difference]: With dead ends: 348 [2024-11-09 22:53:22,124 INFO L226 Difference]: Without dead ends: 345 [2024-11-09 22:53:22,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:53:22,128 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:53:22,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 217 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:53:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-09 22:53:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-11-09 22:53:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 276 states have (on average 1.1376811594202898) internal successors, (314), 283 states have internal predecessors, (314), 36 states have call successors, (36), 32 states have call predecessors, (36), 32 states have return successors, (35), 29 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-09 22:53:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 385 transitions. [2024-11-09 22:53:22,168 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 385 transitions. Word has length 51 [2024-11-09 22:53:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:53:22,169 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 385 transitions. [2024-11-09 22:53:22,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 22:53:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 385 transitions. [2024-11-09 22:53:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:53:22,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:53:22,171 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:53:22,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 22:53:22,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:53:22,372 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:53:22,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:53:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1637732068, now seen corresponding path program 3 times [2024-11-09 22:53:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:53:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44563378] [2024-11-09 22:53:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:53:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:53:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:53:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952429439] [2024-11-09 22:53:22,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:53:22,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:53:22,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:53:22,403 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:53:22,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:53:22,484 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 22:53:22,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:53:22,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:53:22,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:53:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 8 proven. 95 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:53:24,301 INFO L311 TraceCheckSpWp]: Computing backward predicates...