./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.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/cohencu-ll_valuebound5.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 ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:19:01,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:19:01,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:19:01,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:19:01,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:19:01,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:19:01,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:19:01,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:19:01,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:19:01,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:19:01,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:19:01,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:19:01,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:19:01,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:19:01,736 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:19:01,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:19:01,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:19:01,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:19:01,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:19:01,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:19:01,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:19:01,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:19:01,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:19:01,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:19:01,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:19:01,741 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:19:01,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:19:01,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:19:01,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:19:01,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:19:01,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:19:01,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:19:01,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:19:01,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:19:01,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:19:01,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:19:01,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:19:01,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:19:01,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:19:01,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:19:01,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:19:01,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:19:01,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 [2024-11-08 14:19:02,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:19:02,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:19:02,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:19:02,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:19:02,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:19:02,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2024-11-08 14:19:03,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:19:03,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:19:03,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2024-11-08 14:19:03,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723a9a743/ab8a5ad7de7d4e76bcda7229b405f835/FLAG5ca4a2c57 [2024-11-08 14:19:03,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723a9a743/ab8a5ad7de7d4e76bcda7229b405f835 [2024-11-08 14:19:03,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:19:03,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:19:03,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:19:03,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:19:03,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:19:03,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:19:03" (1/1) ... [2024-11-08 14:19:03,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72ca89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:03, skipping insertion in model container [2024-11-08 14:19:03,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:19:03" (1/1) ... [2024-11-08 14:19:03,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:19:03,942 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/cohencu-ll_valuebound5.c[588,601] [2024-11-08 14:19:03,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:19:03,993 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:19:04,043 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/cohencu-ll_valuebound5.c[588,601] [2024-11-08 14:19:04,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:19:04,079 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:19:04,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04 WrapperNode [2024-11-08 14:19:04,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:19:04,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:19:04,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:19:04,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:19:04,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,119 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-08 14:19:04,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:19:04,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:19:04,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:19:04,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:19:04,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,149 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 14:19:04,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:19:04,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:19:04,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:19:04,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:19:04,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (1/1) ... [2024-11-08 14:19:04,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:19:04,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:04,196 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 14:19:04,203 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 14:19:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:19:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:19:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:19:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:19:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:19:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:19:04,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:19:04,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:19:04,496 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:19:04,497 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:19:04,509 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:19:04,510 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 14:19:04,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:19:04 BoogieIcfgContainer [2024-11-08 14:19:04,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:19:04,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:19:04,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:19:04,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:19:04,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:19:03" (1/3) ... [2024-11-08 14:19:04,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e51cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:19:04, skipping insertion in model container [2024-11-08 14:19:04,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:19:04" (2/3) ... [2024-11-08 14:19:04,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e51cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:19:04, skipping insertion in model container [2024-11-08 14:19:04,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:19:04" (3/3) ... [2024-11-08 14:19:04,524 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2024-11-08 14:19:04,542 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:19:04,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:19:04,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:19:04,619 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;@237617e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:19:04,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:19:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-08 14:19:04,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:19:04,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:04,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:04,636 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:04,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2024-11-08 14:19:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872077819] [2024-11-08 14:19:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:19:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872077819] [2024-11-08 14:19:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872077819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:19:04,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:19:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:19:04,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032060239] [2024-11-08 14:19:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:19:04,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:19:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:19:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:19:04,844 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-08 14:19:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:04,866 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2024-11-08 14:19:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:19:04,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-11-08 14:19:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:04,875 INFO L225 Difference]: With dead ends: 51 [2024-11-08 14:19:04,876 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 14:19:04,880 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 [2024-11-08 14:19:04,884 INFO L432 NwaCegarLoop]: 37 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, 37 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 14:19:04,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:19:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 14:19:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-08 14:19:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 14:19:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2024-11-08 14:19:04,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2024-11-08 14:19:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:04,927 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2024-11-08 14:19:04,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-08 14:19:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-11-08 14:19:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:19:04,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:04,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:04,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:19:04,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:04,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2024-11-08 14:19:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988634494] [2024-11-08 14:19:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:19:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988634494] [2024-11-08 14:19:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988634494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:19:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:19:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:19:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562940903] [2024-11-08 14:19:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:19:05,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:19:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:19:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:19:05,202 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 14:19:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:05,351 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-08 14:19:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:19:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-08 14:19:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:05,352 INFO L225 Difference]: With dead ends: 29 [2024-11-08 14:19:05,353 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 14:19:05,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 14:19:05,354 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:05,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:19:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 14:19:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-08 14:19:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 14:19:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2024-11-08 14:19:05,375 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2024-11-08 14:19:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:05,375 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2024-11-08 14:19:05,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 14:19:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-08 14:19:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 14:19:05,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:05,377 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:05,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:19:05,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:05,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2024-11-08 14:19:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616519761] [2024-11-08 14:19:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982827335] [2024-11-08 14:19:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:05,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:05,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:05,413 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 14:19:05,415 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 14:19:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:05,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:19:05,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:19:05,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:19:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616519761] [2024-11-08 14:19:05,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982827335] [2024-11-08 14:19:05,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982827335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:19:05,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:19:05,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:19:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073859193] [2024-11-08 14:19:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:19:05,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:19:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:19:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:19:05,566 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:19:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:05,726 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2024-11-08 14:19:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:19:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-08 14:19:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:05,739 INFO L225 Difference]: With dead ends: 46 [2024-11-08 14:19:05,739 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 14:19:05,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 14:19:05,740 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:05,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:19:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 14:19:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2024-11-08 14:19:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 14:19:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-08 14:19:05,759 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-11-08 14:19:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:05,759 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-08 14:19:05,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:19:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-08 14:19:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 14:19:05,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:05,760 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:05,779 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 14:19:05,961 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 [2024-11-08 14:19:05,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:05,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2024-11-08 14:19:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:05,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125928754] [2024-11-08 14:19:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255843123] [2024-11-08 14:19:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:05,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:05,991 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 14:19:05,994 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 14:19:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:06,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:19:06,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:19:06,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:19:06,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125928754] [2024-11-08 14:19:06,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255843123] [2024-11-08 14:19:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255843123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:19:06,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:19:06,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:19:06,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713129656] [2024-11-08 14:19:06,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:19:06,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:19:06,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:19:06,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:19:06,118 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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 14:19:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:06,206 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2024-11-08 14:19:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:19:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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 19 [2024-11-08 14:19:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:06,209 INFO L225 Difference]: With dead ends: 50 [2024-11-08 14:19:06,209 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 14:19:06,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 14:19:06,210 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:06,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:19:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 14:19:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-08 14:19:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-08 14:19:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-08 14:19:06,226 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2024-11-08 14:19:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:06,226 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-08 14:19:06,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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 14:19:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-08 14:19:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:19:06,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:06,227 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:06,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:19:06,428 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 [2024-11-08 14:19:06,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:06,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2024-11-08 14:19:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856460938] [2024-11-08 14:19:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942987083] [2024-11-08 14:19:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:06,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:06,451 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 14:19:06,453 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 14:19:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:06,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:19:06,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:19:06,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:19:06,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856460938] [2024-11-08 14:19:06,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942987083] [2024-11-08 14:19:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942987083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:19:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:19:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:19:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920869071] [2024-11-08 14:19:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:19:06,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:19:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:19:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:19:06,600 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 14:19:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:06,716 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-08 14:19:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:19:06,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-08 14:19:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:06,717 INFO L225 Difference]: With dead ends: 58 [2024-11-08 14:19:06,717 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 14:19:06,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 14:19:06,719 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:06,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:19:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 14:19:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 14:19:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-08 14:19:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-08 14:19:06,731 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2024-11-08 14:19:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:06,732 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-08 14:19:06,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 14:19:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-08 14:19:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 14:19:06,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:06,733 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:06,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 14:19:06,934 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 [2024-11-08 14:19:06,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:06,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2024-11-08 14:19:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951179964] [2024-11-08 14:19:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611566498] [2024-11-08 14:19:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:06,969 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 14:19:06,970 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 14:19:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:07,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 14:19:07,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:19:07,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:19:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951179964] [2024-11-08 14:19:07,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611566498] [2024-11-08 14:19:07,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611566498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:07,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:07,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-08 14:19:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885613982] [2024-11-08 14:19:07,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:07,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:19:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:19:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:19:07,396 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 14:19:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:07,687 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2024-11-08 14:19:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:19:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2024-11-08 14:19:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:07,690 INFO L225 Difference]: With dead ends: 69 [2024-11-08 14:19:07,690 INFO L226 Difference]: Without dead ends: 67 [2024-11-08 14:19:07,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-08 14:19:07,691 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:07,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:19:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-08 14:19:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2024-11-08 14:19:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-08 14:19:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-08 14:19:07,715 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2024-11-08 14:19:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:07,716 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-08 14:19:07,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 14:19:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-08 14:19:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:19:07,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:07,718 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:07,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 14:19:07,918 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 [2024-11-08 14:19:07,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:07,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2024-11-08 14:19:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:07,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378987747] [2024-11-08 14:19:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577091650] [2024-11-08 14:19:07,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:19:07,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:07,948 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) [2024-11-08 14:19:07,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:19:08,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:19:08,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:19:08,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 14:19:08,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 14:19:08,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 14:19:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378987747] [2024-11-08 14:19:08,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577091650] [2024-11-08 14:19:08,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577091650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:08,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:08,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-08 14:19:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501604724] [2024-11-08 14:19:08,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:08,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:19:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:19:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:19:08,293 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-08 14:19:12,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-08 14:19:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:12,730 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-11-08 14:19:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 14:19:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2024-11-08 14:19:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:12,733 INFO L225 Difference]: With dead ends: 84 [2024-11-08 14:19:12,733 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 14:19:12,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:19:12,737 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:12,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 152 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-08 14:19:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 14:19:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-08 14:19:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-08 14:19:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2024-11-08 14:19:12,771 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2024-11-08 14:19:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:12,772 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2024-11-08 14:19:12,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-08 14:19:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2024-11-08 14:19:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 14:19:12,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:12,773 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:12,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 14:19:12,977 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 [2024-11-08 14:19:12,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:12,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2024-11-08 14:19:12,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:12,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066779553] [2024-11-08 14:19:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777791014] [2024-11-08 14:19:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:19:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:13,004 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) [2024-11-08 14:19:13,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:19:13,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 14:19:13,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:19:13,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 14:19:13,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 14:19:13,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 14:19:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066779553] [2024-11-08 14:19:13,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:13,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777791014] [2024-11-08 14:19:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777791014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:13,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-08 14:19:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102451325] [2024-11-08 14:19:13,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:13,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:19:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:13,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:19:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:19:13,339 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-08 14:19:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:13,559 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-11-08 14:19:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:19:13,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2024-11-08 14:19:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:13,561 INFO L225 Difference]: With dead ends: 96 [2024-11-08 14:19:13,561 INFO L226 Difference]: Without dead ends: 84 [2024-11-08 14:19:13,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:19:13,563 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:13,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 200 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:19:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-08 14:19:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2024-11-08 14:19:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 14:19:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-08 14:19:13,581 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 51 [2024-11-08 14:19:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:13,581 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-08 14:19:13,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-08 14:19:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-08 14:19:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 14:19:13,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:13,586 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:13,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 14:19:13,790 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 [2024-11-08 14:19:13,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:13,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2024-11-08 14:19:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586267616] [2024-11-08 14:19:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389427431] [2024-11-08 14:19:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:13,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:13,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:13,833 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) [2024-11-08 14:19:13,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:19:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:13,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 14:19:13,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-08 14:19:14,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-08 14:19:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586267616] [2024-11-08 14:19:14,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389427431] [2024-11-08 14:19:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389427431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:14,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-08 14:19:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934869592] [2024-11-08 14:19:14,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:14,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:19:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:19:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:19:14,492 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-08 14:19:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:14,939 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2024-11-08 14:19:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:19:14,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2024-11-08 14:19:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:14,942 INFO L225 Difference]: With dead ends: 97 [2024-11-08 14:19:14,946 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 14:19:14,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:19:14,947 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:14,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:19:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 14:19:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-08 14:19:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 14:19:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2024-11-08 14:19:14,989 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 67 [2024-11-08 14:19:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:14,990 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2024-11-08 14:19:14,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-08 14:19:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2024-11-08 14:19:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 14:19:14,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:14,991 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:15,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:19:15,195 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 [2024-11-08 14:19:15,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:15,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2024-11-08 14:19:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254446669] [2024-11-08 14:19:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463362101] [2024-11-08 14:19:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:15,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:15,241 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) [2024-11-08 14:19:15,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:19:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:19:15,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 14:19:15,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 14:19:15,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 14:19:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254446669] [2024-11-08 14:19:15,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463362101] [2024-11-08 14:19:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463362101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:15,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-08 14:19:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531832658] [2024-11-08 14:19:15,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 14:19:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 14:19:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-08 14:19:15,853 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-08 14:19:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:16,231 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-08 14:19:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 14:19:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2024-11-08 14:19:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:16,233 INFO L225 Difference]: With dead ends: 109 [2024-11-08 14:19:16,233 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 14:19:16,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:19:16,234 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:16,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 225 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:19:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 14:19:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-08 14:19:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-08 14:19:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-08 14:19:16,297 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 72 [2024-11-08 14:19:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:16,298 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-08 14:19:16,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-08 14:19:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-08 14:19:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 14:19:16,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:16,301 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:16,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 14:19:16,505 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 [2024-11-08 14:19:16,506 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:16,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2024-11-08 14:19:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591722792] [2024-11-08 14:19:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328823142] [2024-11-08 14:19:16,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:19:16,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:16,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:16,575 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) [2024-11-08 14:19:16,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:19:16,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:19:16,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:19:16,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 14:19:16,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-08 14:19:16,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-11-08 14:19:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591722792] [2024-11-08 14:19:17,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:17,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328823142] [2024-11-08 14:19:17,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328823142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:17,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-11-08 14:19:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403040014] [2024-11-08 14:19:17,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:17,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 14:19:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 14:19:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-08 14:19:17,518 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-08 14:19:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:17,937 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2024-11-08 14:19:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:19:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-11-08 14:19:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:17,939 INFO L225 Difference]: With dead ends: 127 [2024-11-08 14:19:17,939 INFO L226 Difference]: Without dead ends: 123 [2024-11-08 14:19:17,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:19:17,940 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:17,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 271 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:19:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-08 14:19:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-11-08 14:19:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 29 states have call successors, (29), 19 states have call predecessors, (29), 18 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-08 14:19:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2024-11-08 14:19:17,986 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 121 [2024-11-08 14:19:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:17,987 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2024-11-08 14:19:17,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-08 14:19:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2024-11-08 14:19:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 14:19:17,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:19:17,993 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:19:18,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 14:19:18,194 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 [2024-11-08 14:19:18,194 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:19:18,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:19:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 2 times [2024-11-08 14:19:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:19:18,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869213380] [2024-11-08 14:19:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:19:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:19:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:19:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747253338] [2024-11-08 14:19:18,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:19:18,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:19:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:19:18,227 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) [2024-11-08 14:19:18,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:19:18,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:19:18,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:19:18,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 14:19:18,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:19:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-11-08 14:19:18,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:19:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 40 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-08 14:19:19,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:19:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869213380] [2024-11-08 14:19:19,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:19:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747253338] [2024-11-08 14:19:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747253338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:19:19,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:19:19,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2024-11-08 14:19:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183818326] [2024-11-08 14:19:19,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:19:19,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 14:19:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:19:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 14:19:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:19:19,332 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-11-08 14:19:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:19:19,969 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2024-11-08 14:19:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:19:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 126 [2024-11-08 14:19:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:19:19,982 INFO L225 Difference]: With dead ends: 135 [2024-11-08 14:19:19,982 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 14:19:19,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:19:19,984 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:19:19,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 208 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:19:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 14:19:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 14:19:19,985 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 14:19:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 14:19:19,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2024-11-08 14:19:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:19:19,985 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 14:19:19,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-11-08 14:19:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 14:19:19,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 14:19:19,989 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:19:20,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 14:19:20,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 14:19:20,197 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 14:19:20,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 14:19:27,658 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:19:27,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:19:27 BoogieIcfgContainer [2024-11-08 14:19:27,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:19:27,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:19:27,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:19:27,680 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:19:27,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:19:04" (3/4) ... [2024-11-08 14:19:27,682 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 14:19:27,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 14:19:27,690 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-08 14:19:27,690 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 14:19:27,690 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 14:19:27,690 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 14:19:27,780 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:19:27,780 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 14:19:27,781 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:19:27,781 INFO L158 Benchmark]: Toolchain (without parser) took 24063.79ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 99.2MB in the beginning and 151.6MB in the end (delta: -52.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,781 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:19:27,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.77ms. Allocated memory is still 159.4MB. Free memory was 99.2MB in the beginning and 128.5MB in the end (delta: -29.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.18ms. Allocated memory is still 159.4MB. Free memory was 128.5MB in the beginning and 127.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,782 INFO L158 Benchmark]: Boogie Preprocessor took 41.03ms. Allocated memory is still 159.4MB. Free memory was 127.0MB in the beginning and 125.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,782 INFO L158 Benchmark]: RCFGBuilder took 349.19ms. Allocated memory is still 159.4MB. Free memory was 124.9MB in the beginning and 113.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,783 INFO L158 Benchmark]: TraceAbstraction took 23164.59ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 112.3MB in the beginning and 155.8MB in the end (delta: -43.5MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,783 INFO L158 Benchmark]: Witness Printer took 101.25ms. Allocated memory is still 247.5MB. Free memory was 155.8MB in the beginning and 151.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 14:19:27,784 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.77ms. Allocated memory is still 159.4MB. Free memory was 99.2MB in the beginning and 128.5MB in the end (delta: -29.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.18ms. Allocated memory is still 159.4MB. Free memory was 128.5MB in the beginning and 127.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.03ms. Allocated memory is still 159.4MB. Free memory was 127.0MB in the beginning and 125.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.19ms. Allocated memory is still 159.4MB. Free memory was 124.9MB in the beginning and 113.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23164.59ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 112.3MB in the beginning and 155.8MB in the end (delta: -43.5MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. * Witness Printer took 101.25ms. Allocated memory is still 247.5MB. Free memory was 155.8MB in the beginning and 151.6MB 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: 17]: 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 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.6s, OverallIterations: 12, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 1769 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1411 mSDsCounter, 271 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1434 IncrementalHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 271 mSolverCounterUnsat, 358 mSDtfsCounter, 1434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1128 GetRequests, 1000 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=11, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1180 NumberOfCodeBlocks, 1150 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 5309/5604 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: 33]: Loop Invariant Derived loop invariant: (((((((((__int128) x * z) == (((__int128) x * 12) + (6 * ((__int128) a * x)))) || (n < (a + 1))) && (a <= 5)) && (((((__int128) y * z) + 6) + ((__int128) z * z)) == ((((__int128) z * 4) + ((__int128) x * 18)) + ((__int128) y * 24)))) && (z == (6 + ((__int128) 6 * n)))) && (((__int128) 2 * y) == (((__int128) n * z) + 2))) && (0 <= a)) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-08 14:19:27,810 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