./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/ps5-ll_valuebound50.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 a7db00fa220927f51e1e342e06102a5d28a1c61268049ef86f9068e213c9adb5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:43:54,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:43:54,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:43:54,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:43:54,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:43:54,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:43:54,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:43:54,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:43:54,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:43:54,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:43:54,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:43:54,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:43:54,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:43:54,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:43:54,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:43:54,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:43:54,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:43:54,961 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:43:54,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:43:54,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:43:54,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:43:54,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:43:54,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:43:54,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:43:54,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:43:54,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:43:54,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:43:54,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:43:54,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:43:54,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:43:54,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:43:54,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:43:54,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:43:54,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:43:54,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:43:54,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:43:54,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:43:54,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:43:54,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:43:54,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:43:54,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:43:54,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:43:54,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7db00fa220927f51e1e342e06102a5d28a1c61268049ef86f9068e213c9adb5 [2024-11-08 14:43:55,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:43:55,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:43:55,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:43:55,200 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:43:55,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:43:55,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c [2024-11-08 14:43:56,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:43:56,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:43:56,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound50.c [2024-11-08 14:43:56,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8dd461a/f0df862884124016b35a9418ea659b73/FLAGaaf9ca29a [2024-11-08 14:43:56,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8dd461a/f0df862884124016b35a9418ea659b73 [2024-11-08 14:43:56,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:43:56,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:43:56,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:43:56,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:43:56,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:43:56,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faad255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56, skipping insertion in model container [2024-11-08 14:43:56,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:43:56,767 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/ps5-ll_valuebound50.c[458,471] [2024-11-08 14:43:56,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:43:56,785 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:43:56,797 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/ps5-ll_valuebound50.c[458,471] [2024-11-08 14:43:56,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:43:56,817 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:43:56,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56 WrapperNode [2024-11-08 14:43:56,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:43:56,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:43:56,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:43:56,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:43:56,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,840 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-11-08 14:43:56,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:43:56,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:43:56,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:43:56,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:43:56,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,865 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]. [2024-11-08 14:43:56,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:43:56,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:43:56,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:43:56,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:43:56,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (1/1) ... [2024-11-08 14:43:56,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:43:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:43:56,903 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) [2024-11-08 14:43:56,908 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 [2024-11-08 14:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 14:43:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 14:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:43:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:43:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:43:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:43:56,992 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:43:56,996 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:43:57,111 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:43:57,111 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:43:57,121 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:43:57,121 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 14:43:57,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:43:57 BoogieIcfgContainer [2024-11-08 14:43:57,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:43:57,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:43:57,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:43:57,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:43:57,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:43:56" (1/3) ... [2024-11-08 14:43:57,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb134a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:43:57, skipping insertion in model container [2024-11-08 14:43:57,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:43:56" (2/3) ... [2024-11-08 14:43:57,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb134a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:43:57, skipping insertion in model container [2024-11-08 14:43:57,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:43:57" (3/3) ... [2024-11-08 14:43:57,128 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound50.c [2024-11-08 14:43:57,141 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:43:57,141 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:43:57,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:43:57,194 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;@4de77bec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:43:57,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:43:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 14:43:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 14:43:57,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:43:57,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:43:57,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:43:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:43:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2024-11-08 14:43:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:43:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122235288] [2024-11-08 14:43:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:43:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:57,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:43:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:57,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:43:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:43:57,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:43:57,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122235288] [2024-11-08 14:43:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122235288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:43:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:43:57,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:43:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165081952] [2024-11-08 14:43:57,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:43:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:43:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:43:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:43:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:43:57,359 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:43:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:43:57,370 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2024-11-08 14:43:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:43:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-08 14:43:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:43:57,376 INFO L225 Difference]: With dead ends: 45 [2024-11-08 14:43:57,376 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 14:43:57,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:43:57,380 INFO L432 NwaCegarLoop]: 27 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, 27 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 [2024-11-08 14:43:57,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:43:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 14:43:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 14:43:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2024-11-08 14:43:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-08 14:43:57,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2024-11-08 14:43:57,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:43:57,410 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-08 14:43:57,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:43:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-08 14:43:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 14:43:57,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:43:57,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:43:57,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:43:57,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:43:57,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:43:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2024-11-08 14:43:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:43:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834540166] [2024-11-08 14:43:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:43:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:43:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869965643] [2024-11-08 14:43:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:57,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:57,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:43:57,436 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) [2024-11-08 14:43:57,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:43:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:57,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:43:57,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:43:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:43:57,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:43:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:43:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834540166] [2024-11-08 14:43:57,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:43:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869965643] [2024-11-08 14:43:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869965643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:43:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:43:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:43:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996549186] [2024-11-08 14:43:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:43:57,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:43:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:43:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:43:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:43:57,561 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 14:43:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:43:57,609 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-08 14:43:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:43:57,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-08 14:43:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:43:57,610 INFO L225 Difference]: With dead ends: 31 [2024-11-08 14:43:57,610 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 14:43:57,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:43:57,612 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:43:57,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:43:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 14:43:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-08 14:43:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 14:43:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-08 14:43:57,618 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2024-11-08 14:43:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:43:57,619 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-08 14:43:57,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 14:43:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-08 14:43:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 14:43:57,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:43:57,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:43:57,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 14:43:57,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:57,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:43:57,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:43:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2024-11-08 14:43:57,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:43:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668626958] [2024-11-08 14:43:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:43:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:43:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251440193] [2024-11-08 14:43:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:57,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:43:57,863 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) [2024-11-08 14:43:57,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:43:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:57,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 14:43:57,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:43:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:43:57,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:43:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:43:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:43:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668626958] [2024-11-08 14:43:58,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:43:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251440193] [2024-11-08 14:43:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251440193] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 14:43:58,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:43:58,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-08 14:43:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142014724] [2024-11-08 14:43:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:43:58,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:43:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:43:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:43:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:43:58,056 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 14:43:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:43:58,098 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-08 14:43:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:43:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-08 14:43:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:43:58,100 INFO L225 Difference]: With dead ends: 33 [2024-11-08 14:43:58,100 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 14:43:58,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:43:58,101 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:43:58,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:43:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 14:43:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-08 14:43:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 14:43:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-08 14:43:58,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2024-11-08 14:43:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:43:58,111 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-08 14:43:58,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 14:43:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-08 14:43:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 14:43:58,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:43:58,112 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:43:58,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:43:58,312 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,SelfDestructingSolverStorable2 [2024-11-08 14:43:58,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:43:58,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:43:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2024-11-08 14:43:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:43:58,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574916122] [2024-11-08 14:43:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:43:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:43:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71993380] [2024-11-08 14:43:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:58,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:58,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:43:58,347 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) [2024-11-08 14:43:58,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:43:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:43:58,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 14:43:58,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:43:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 14:43:58,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:43:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 14:43:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:43:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574916122] [2024-11-08 14:43:58,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:43:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71993380] [2024-11-08 14:43:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71993380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:43:58,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:43:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-08 14:43:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507204453] [2024-11-08 14:43:58,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:43:58,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:43:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:43:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:43:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:43:58,617 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-08 14:43:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:43:58,716 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-08 14:43:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:43:58,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2024-11-08 14:43:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:43:58,718 INFO L225 Difference]: With dead ends: 46 [2024-11-08 14:43:58,718 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 14:43:58,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:43:58,719 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:43:58,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:43:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 14:43:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 14:43:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 14:43:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-08 14:43:58,734 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 36 [2024-11-08 14:43:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:43:58,734 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-08 14:43:58,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-08 14:43:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-08 14:43:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 14:43:58,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:43:58,737 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:43:58,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:43:58,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:58,938 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:43:58,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:43:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1013596503, now seen corresponding path program 2 times [2024-11-08 14:43:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:43:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247449550] [2024-11-08 14:43:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:43:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:43:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:43:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33423271] [2024-11-08 14:43:58,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:43:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:43:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:43:58,999 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) [2024-11-08 14:43:59,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:43:59,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:43:59,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:43:59,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 14:43:59,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:43:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 14:43:59,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:43:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 14:43:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:43:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247449550] [2024-11-08 14:43:59,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:43:59,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33423271] [2024-11-08 14:43:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33423271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:43:59,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:43:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-08 14:43:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514148509] [2024-11-08 14:43:59,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:43:59,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 14:43:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:43:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 14:43:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:43:59,508 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-08 14:43:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:43:59,788 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-08 14:43:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:43:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 57 [2024-11-08 14:43:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:43:59,790 INFO L225 Difference]: With dead ends: 43 [2024-11-08 14:43:59,790 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 14:43:59,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:43:59,792 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:43:59,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:43:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 14:43:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 14:43:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:43:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 14:43:59,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2024-11-08 14:43:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:43:59,796 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 14:43:59,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-08 14:43:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 14:43:59,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 14:43:59,799 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:43:59,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 14:44:00,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:44:00,007 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-08 14:44:00,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 14:44:00,438 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:44:00,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:44:00 BoogieIcfgContainer [2024-11-08 14:44:00,457 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:44:00,458 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:44:00,458 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:44:00,458 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:44:00,459 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:43:57" (3/4) ... [2024-11-08 14:44:00,460 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 14:44:00,463 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-08 14:44:00,464 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 14:44:00,467 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-08 14:44:00,467 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 14:44:00,467 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 14:44:00,467 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 14:44:00,530 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:44:00,530 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 14:44:00,530 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:44:00,531 INFO L158 Benchmark]: Toolchain (without parser) took 3970.12ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 105.4MB in the beginning and 143.9MB in the end (delta: -38.5MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,531 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory was 132.9MB in the beginning and 132.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:44:00,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.68ms. Allocated memory is still 174.1MB. Free memory was 105.2MB in the beginning and 139.1MB in the end (delta: -33.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.34ms. Allocated memory is still 174.1MB. Free memory was 139.1MB in the beginning and 137.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,532 INFO L158 Benchmark]: Boogie Preprocessor took 33.96ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,532 INFO L158 Benchmark]: RCFGBuilder took 245.33ms. Allocated memory is still 174.1MB. Free memory was 135.3MB in the beginning and 124.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,533 INFO L158 Benchmark]: TraceAbstraction took 3334.84ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 123.6MB in the beginning and 148.1MB in the end (delta: -24.6MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,533 INFO L158 Benchmark]: Witness Printer took 72.47ms. Allocated memory is still 237.0MB. Free memory was 148.1MB in the beginning and 143.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 14:44:00,534 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory was 132.9MB in the beginning and 132.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.68ms. Allocated memory is still 174.1MB. Free memory was 105.2MB in the beginning and 139.1MB in the end (delta: -33.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.34ms. Allocated memory is still 174.1MB. Free memory was 139.1MB in the beginning and 137.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.96ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.33ms. Allocated memory is still 174.1MB. Free memory was 135.3MB in the beginning and 124.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3334.84ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 123.6MB in the beginning and 148.1MB in the end (delta: -24.6MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 72.47ms. Allocated memory is still 237.0MB. Free memory was 148.1MB in the beginning and 143.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 561 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 451 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 236 IncrementalHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 110 mSDtfsCounter, 236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 7 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 186/286 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && ((((__int128) 30 * x) + y) == (((6 * (((((__int128) y * y) * y) * y) * y)) + ((((__int128) y * y) * y) * 10)) + (((((__int128) y * y) * y) * y) * 15)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-08 14:44:00,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE