./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.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 1c50dd7e64abcc7a7eef6ea31e37156afb1e4322422284686cac6e6613b192c7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:53:55,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:53:55,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:53:55,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:53:55,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:53:55,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:53:55,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:53:55,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:53:55,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:53:55,171 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:53:55,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:53:55,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:53:55,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:53:55,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:53:55,173 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:53:55,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:53:55,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:53:55,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:53:55,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:53:55,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:53:55,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:53:55,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:53:55,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:53:55,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:53:55,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:53:55,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:53:55,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:53:55,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:53:55,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:53:55,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:53:55,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:53:55,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:53:55,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:53:55,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:53:55,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:53:55,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:53:55,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:53:55,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c50dd7e64abcc7a7eef6ea31e37156afb1e4322422284686cac6e6613b192c7 [2024-11-18 13:53:55,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:53:55,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:53:55,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:53:55,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:53:55,424 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:53:55,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c [2024-11-18 13:53:56,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:53:56,796 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:53:56,797 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c [2024-11-18 13:53:56,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d60e7256/44aabf0b8b354c25a819156aa7d1e778/FLAG9ebe29fe6 [2024-11-18 13:53:56,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d60e7256/44aabf0b8b354c25a819156aa7d1e778 [2024-11-18 13:53:56,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:53:56,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:53:56,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:53:56,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:53:56,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:53:56,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:53:56" (1/1) ... [2024-11-18 13:53:56,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d26fd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:56, skipping insertion in model container [2024-11-18 13:53:56,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:53:56" (1/1) ... [2024-11-18 13:53:56,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:53:56,991 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c[458,471] [2024-11-18 13:53:57,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:53:57,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:53:57,029 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c[458,471] [2024-11-18 13:53:57,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:53:57,052 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:53:57,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57 WrapperNode [2024-11-18 13:53:57,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:53:57,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:53:57,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:53:57,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:53:57,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,092 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-18 13:53:57,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:53:57,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:53:57,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:53:57,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:53:57,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,112 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]. [2024-11-18 13:53:57,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:53:57,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:53:57,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:53:57,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:53:57,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (1/1) ... [2024-11-18 13:53:57,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:53:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:57,151 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) [2024-11-18 13:53:57,154 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 [2024-11-18 13:53:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:53:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:53:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:53:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:53:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:53:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:53:57,255 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:53:57,261 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:53:57,387 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-18 13:53:57,388 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:53:57,406 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:53:57,406 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:53:57,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:53:57 BoogieIcfgContainer [2024-11-18 13:53:57,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:53:57,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:53:57,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:53:57,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:53:57,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:53:56" (1/3) ... [2024-11-18 13:53:57,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59add185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:53:57, skipping insertion in model container [2024-11-18 13:53:57,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:57" (2/3) ... [2024-11-18 13:53:57,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59add185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:53:57, skipping insertion in model container [2024-11-18 13:53:57,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:53:57" (3/3) ... [2024-11-18 13:53:57,416 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound10.c [2024-11-18 13:53:57,429 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:53:57,429 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:53:57,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:53:57,483 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;@793ca163, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:53:57,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:53:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:53:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 13:53:57,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:57,494 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:57,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -579246775, now seen corresponding path program 1 times [2024-11-18 13:53:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465001066] [2024-11-18 13:53:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465001066] [2024-11-18 13:53:57,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465001066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:57,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:57,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:53:57,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424143012] [2024-11-18 13:53:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:57,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:53:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:53:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:53:57,665 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2024-11-18 13:53:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:57,683 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-18 13:53:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:53:57,685 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 [2024-11-18 13:53:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:57,690 INFO L225 Difference]: With dead ends: 37 [2024-11-18 13:53:57,691 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 13:53:57,694 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 [2024-11-18 13:53:57,697 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-18 13:53:57,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 13:53:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 13:53:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-18 13:53:57,732 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-18 13:53:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:57,732 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-18 13:53:57,733 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) [2024-11-18 13:53:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-18 13:53:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:53:57,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:57,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:57,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:53:57,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:57,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1986551203, now seen corresponding path program 1 times [2024-11-18 13:53:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:57,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47731430] [2024-11-18 13:53:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47731430] [2024-11-18 13:53:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47731430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:53:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075163321] [2024-11-18 13:53:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:57,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:53:57,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:53:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:53:57,860 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:57,877 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-18 13:53:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:53:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:53:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:57,879 INFO L225 Difference]: With dead ends: 26 [2024-11-18 13:53:57,879 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 13:53:57,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:53:57,880 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:57,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 13:53:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 13:53:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-18 13:53:57,888 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2024-11-18 13:53:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:57,888 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-18 13:53:57,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-18 13:53:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:53:57,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:57,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:57,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:53:57,890 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:57,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1984763743, now seen corresponding path program 1 times [2024-11-18 13:53:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438097677] [2024-11-18 13:53:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:57,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614651268] [2024-11-18 13:53:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:57,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:57,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:57,919 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) [2024-11-18 13:53:57,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:53:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:57,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:53:57,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:58,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:53:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438097677] [2024-11-18 13:53:58,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614651268] [2024-11-18 13:53:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614651268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:53:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390828143] [2024-11-18 13:53:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:58,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:53:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:53:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:53:58,076 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:58,133 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-18 13:53:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:53:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:53:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:58,135 INFO L225 Difference]: With dead ends: 28 [2024-11-18 13:53:58,135 INFO L226 Difference]: Without dead ends: 24 [2024-11-18 13:53:58,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:53:58,136 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:58,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-18 13:53:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-18 13:53:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:53:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-18 13:53:58,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2024-11-18 13:53:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:58,143 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-18 13:53:58,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-18 13:53:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:53:58,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:58,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:58,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:53:58,346 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 [2024-11-18 13:53:58,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:58,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash -69803837, now seen corresponding path program 1 times [2024-11-18 13:53:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504574536] [2024-11-18 13:53:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504574536] [2024-11-18 13:53:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504574536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:58,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551191677] [2024-11-18 13:53:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:58,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:58,487 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) [2024-11-18 13:53:58,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:53:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:58,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:53:58,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:58,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551191677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:58,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-18 13:53:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591603471] [2024-11-18 13:53:58,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:58,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:53:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:53:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:53:58,640 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:53:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:58,736 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-18 13:53:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:53:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-11-18 13:53:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:58,738 INFO L225 Difference]: With dead ends: 58 [2024-11-18 13:53:58,738 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 13:53:58,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:53:58,739 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:58,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 81 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:53:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 13:53:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-11-18 13:53:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:53:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-18 13:53:58,746 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2024-11-18 13:53:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:58,746 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-18 13:53:58,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:53:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-18 13:53:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:53:58,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:58,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:58,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:53:58,951 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 [2024-11-18 13:53:58,952 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:58,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -68016377, now seen corresponding path program 1 times [2024-11-18 13:53:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794137882] [2024-11-18 13:53:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:58,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053302377] [2024-11-18 13:53:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:58,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:58,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:58,977 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) [2024-11-18 13:53:58,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:53:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:59,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:53:59,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:59,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:53:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794137882] [2024-11-18 13:53:59,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053302377] [2024-11-18 13:53:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053302377] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:53:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-18 13:53:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120340353] [2024-11-18 13:53:59,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:59,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:53:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:59,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:53:59,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:53:59,173 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-18 13:53:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:59,216 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-18 13:53:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:53:59,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 18 [2024-11-18 13:53:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:59,217 INFO L225 Difference]: With dead ends: 60 [2024-11-18 13:53:59,217 INFO L226 Difference]: Without dead ends: 52 [2024-11-18 13:53:59,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:53:59,218 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:59,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-18 13:53:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-18 13:53:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:53:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-18 13:53:59,236 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2024-11-18 13:53:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:59,236 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-18 13:53:59,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-18 13:53:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-18 13:53:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:53:59,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:59,240 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:59,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:53:59,440 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 [2024-11-18 13:53:59,441 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:59,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 156635680, now seen corresponding path program 1 times [2024-11-18 13:53:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819702340] [2024-11-18 13:53:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:59,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839770893] [2024-11-18 13:53:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:59,466 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) [2024-11-18 13:53:59,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:53:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:59,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:53:59,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:53:59,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:53:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819702340] [2024-11-18 13:53:59,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839770893] [2024-11-18 13:53:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839770893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:59,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:53:59,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-18 13:53:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338137350] [2024-11-18 13:53:59,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:59,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:53:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:53:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:53:59,706 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:53:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:59,794 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-18 13:53:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:53:59,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2024-11-18 13:53:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:59,796 INFO L225 Difference]: With dead ends: 55 [2024-11-18 13:53:59,796 INFO L226 Difference]: Without dead ends: 46 [2024-11-18 13:53:59,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:53:59,797 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:59,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 104 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-18 13:53:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-18 13:53:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:53:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-18 13:53:59,808 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 29 [2024-11-18 13:53:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:59,808 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-18 13:53:59,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:53:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-18 13:53:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 13:53:59,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:59,809 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:59,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:54:00,009 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 [2024-11-18 13:54:00,010 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:00,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1854611729, now seen corresponding path program 1 times [2024-11-18 13:54:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:54:00,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347245758] [2024-11-18 13:54:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:54:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:54:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:54:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347245758] [2024-11-18 13:54:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347245758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:54:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709304345] [2024-11-18 13:54:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:00,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:54:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:54:00,158 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) [2024-11-18 13:54:00,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:54:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:00,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:54:00,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:54:00,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:54:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:54:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709304345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:54:00,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:54:00,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2024-11-18 13:54:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707028219] [2024-11-18 13:54:00,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:54:00,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:54:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:54:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:54:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:54:00,338 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-18 13:54:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:00,515 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-18 13:54:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 13:54:00,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) Word has length 47 [2024-11-18 13:54:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:00,516 INFO L225 Difference]: With dead ends: 132 [2024-11-18 13:54:00,516 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 13:54:00,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:54:00,517 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:00,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 99 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:54:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 13:54:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2024-11-18 13:54:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 74 states have internal predecessors, (76), 17 states have call successors, (17), 11 states have call predecessors, (17), 10 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 13:54:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2024-11-18 13:54:00,550 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 47 [2024-11-18 13:54:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:00,550 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2024-11-18 13:54:00,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-18 13:54:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2024-11-18 13:54:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 13:54:00,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:00,552 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:00,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 13:54:00,752 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 [2024-11-18 13:54:00,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:00,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 348710830, now seen corresponding path program 2 times [2024-11-18 13:54:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:54:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458489833] [2024-11-18 13:54:00,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:54:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:54:00,799 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:54:00,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 13:54:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899346054] [2024-11-18 13:54:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:54:00,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:54:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:54:00,802 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) [2024-11-18 13:54:00,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:54:00,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:54:00,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 13:54:00,866 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2024-11-18 13:54:00,866 INFO L325 BasicCegarLoop]: Counterexample might be feasible [2024-11-18 13:54:00,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:54:00,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:54:01,073 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 [2024-11-18 13:54:01,076 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:01,086 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:54:01,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:54:01 BoogieIcfgContainer [2024-11-18 13:54:01,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:54:01,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:54:01,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:54:01,089 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:54:01,089 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:53:57" (3/4) ... [2024-11-18 13:54:01,091 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-18 13:54:01,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:54:01,092 INFO L158 Benchmark]: Toolchain (without parser) took 4274.42ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 98.4MB in the beginning and 136.6MB in the end (delta: -38.2MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,092 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:54:01,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.93ms. Allocated memory is still 167.8MB. Free memory was 98.2MB in the beginning and 85.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.54ms. Allocated memory is still 167.8MB. Free memory was 85.1MB in the beginning and 138.5MB in the end (delta: -53.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,093 INFO L158 Benchmark]: Boogie Preprocessor took 30.47ms. Allocated memory is still 167.8MB. Free memory was 138.5MB in the beginning and 136.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,093 INFO L158 Benchmark]: RCFGBuilder took 282.58ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 136.8MB in the beginning and 198.8MB in the end (delta: -62.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,093 INFO L158 Benchmark]: TraceAbstraction took 3679.62ms. Allocated memory is still 234.9MB. Free memory was 197.8MB in the beginning and 136.6MB in the end (delta: 61.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2024-11-18 13:54:01,093 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 234.9MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:54:01,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.93ms. Allocated memory is still 167.8MB. Free memory was 98.2MB in the beginning and 85.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.54ms. Allocated memory is still 167.8MB. Free memory was 85.1MB in the beginning and 138.5MB in the end (delta: -53.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.47ms. Allocated memory is still 167.8MB. Free memory was 138.5MB in the beginning and 136.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 282.58ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 136.8MB in the beginning and 198.8MB in the end (delta: -62.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3679.62ms. Allocated memory is still 234.9MB. Free memory was 197.8MB in the beginning and 136.6MB in the end (delta: 61.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 234.9MB. Free memory is still 136.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 12]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] EXPR counter++ [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND TRUE !(c < k) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 125 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 203 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=7, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 35 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 305 ConstructedInterpolants, 0 QuantifiedInterpolants, 968 SizeOfPredicates, 9 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 175/312 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-18 13:54:01,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1c50dd7e64abcc7a7eef6ea31e37156afb1e4322422284686cac6e6613b192c7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:54:02,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:54:03,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-18 13:54:03,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:54:03,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:54:03,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:54:03,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:54:03,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:54:03,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:54:03,038 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:54:03,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:54:03,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:54:03,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:54:03,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:54:03,039 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:54:03,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:54:03,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:54:03,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:54:03,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:54:03,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:54:03,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:54:03,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:54:03,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:54:03,042 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-18 13:54:03,042 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-18 13:54:03,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:54:03,042 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-18 13:54:03,043 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:54:03,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:54:03,043 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:54:03,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:54:03,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:54:03,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:54:03,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:54:03,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:54:03,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:54:03,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:54:03,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:54:03,045 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-18 13:54:03,045 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-18 13:54:03,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:54:03,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:54:03,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:54:03,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:54:03,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c50dd7e64abcc7a7eef6ea31e37156afb1e4322422284686cac6e6613b192c7 [2024-11-18 13:54:03,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:54:03,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:54:03,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:54:03,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:54:03,326 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:54:03,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c [2024-11-18 13:54:04,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:54:04,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:54:04,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c [2024-11-18 13:54:04,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613c23849/47b78dbc1e1746c79595112368d7b056/FLAG4fd46602a [2024-11-18 13:54:04,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613c23849/47b78dbc1e1746c79595112368d7b056 [2024-11-18 13:54:04,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:54:04,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:54:04,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:54:04,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:54:04,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:54:04,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:54:04" (1/1) ... [2024-11-18 13:54:04,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583fa747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:04, skipping insertion in model container [2024-11-18 13:54:04,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:54:04" (1/1) ... [2024-11-18 13:54:04,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:54:04,971 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c[458,471] [2024-11-18 13:54:04,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:54:05,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:54:05,011 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound10.c[458,471] [2024-11-18 13:54:05,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:54:05,038 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:54:05,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05 WrapperNode [2024-11-18 13:54:05,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:54:05,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:54:05,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:54:05,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:54:05,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,067 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-11-18 13:54:05,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:54:05,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:54:05,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:54:05,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:54:05,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,101 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]. [2024-11-18 13:54:05,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:54:05,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:54:05,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:54:05,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:54:05,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (1/1) ... [2024-11-18 13:54:05,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:54:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:54:05,151 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) [2024-11-18 13:54:05,155 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 [2024-11-18 13:54:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:54:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-18 13:54:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:54:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:54:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:54:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:54:05,245 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:54:05,247 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:54:05,644 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-18 13:54:05,644 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:54:05,657 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:54:05,658 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:54:05,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:54:05 BoogieIcfgContainer [2024-11-18 13:54:05,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:54:05,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:54:05,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:54:05,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:54:05,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:54:04" (1/3) ... [2024-11-18 13:54:05,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd8490e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:54:05, skipping insertion in model container [2024-11-18 13:54:05,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:54:05" (2/3) ... [2024-11-18 13:54:05,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd8490e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:54:05, skipping insertion in model container [2024-11-18 13:54:05,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:54:05" (3/3) ... [2024-11-18 13:54:05,666 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound10.c [2024-11-18 13:54:05,679 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:54:05,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:54:05,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:54:05,742 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;@2f3785e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:54:05,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:54:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:54:05,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 13:54:05,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:05,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:05,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:05,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -579246775, now seen corresponding path program 1 times [2024-11-18 13:54:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719636907] [2024-11-18 13:54:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:05,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:05,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:05,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:05,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-18 13:54:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:05,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:54:05,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:05,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:54:05,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719636907] [2024-11-18 13:54:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719636907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:54:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:54:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:54:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119191136] [2024-11-18 13:54:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:54:05,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:54:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:05,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:54:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:54:05,992 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2024-11-18 13:54:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:06,009 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-18 13:54:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:54:06,013 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 [2024-11-18 13:54:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:06,019 INFO L225 Difference]: With dead ends: 37 [2024-11-18 13:54:06,020 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 13:54:06,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:54:06,027 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-18 13:54:06,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:54:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 13:54:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 13:54:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:54:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-18 13:54:06,064 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-18 13:54:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:06,065 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-18 13:54:06,065 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) [2024-11-18 13:54:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-18 13:54:06,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:54:06,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:06,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:06,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-18 13:54:06,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:06,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:06,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1986551203, now seen corresponding path program 1 times [2024-11-18 13:54:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437832841] [2024-11-18 13:54:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:06,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:06,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-18 13:54:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:06,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:54:06,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:06,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:54:06,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:06,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437832841] [2024-11-18 13:54:06,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437832841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:54:06,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:54:06,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:54:06,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114387875] [2024-11-18 13:54:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:54:06,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:54:06,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:54:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:54:06,527 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:54:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:06,559 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-18 13:54:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:54:06,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:54:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:06,560 INFO L225 Difference]: With dead ends: 26 [2024-11-18 13:54:06,560 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 13:54:06,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:54:06,561 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:06,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:54:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 13:54:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 13:54:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:54:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-18 13:54:06,566 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2024-11-18 13:54:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:06,566 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-18 13:54:06,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:54:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-18 13:54:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:54:06,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:06,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:06,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:54:06,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:06,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1984763743, now seen corresponding path program 1 times [2024-11-18 13:54:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141849575] [2024-11-18 13:54:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:06,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:06,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-18 13:54:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:06,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:54:06,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:07,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:54:07,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:07,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141849575] [2024-11-18 13:54:07,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141849575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:54:07,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:54:07,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:54:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129277152] [2024-11-18 13:54:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:54:07,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:54:07,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:54:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:54:07,052 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:54:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:08,225 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-18 13:54:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:54:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:54:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:08,235 INFO L225 Difference]: With dead ends: 28 [2024-11-18 13:54:08,235 INFO L226 Difference]: Without dead ends: 24 [2024-11-18 13:54:08,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:54:08,237 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:08,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 13:54:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-18 13:54:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-18 13:54:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:54:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-18 13:54:08,244 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2024-11-18 13:54:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:08,244 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-18 13:54:08,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:54:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-18 13:54:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:54:08,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:08,245 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:08,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:54:08,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:08,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash -69803837, now seen corresponding path program 1 times [2024-11-18 13:54:08,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:08,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798615888] [2024-11-18 13:54:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:08,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:08,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:08,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-18 13:54:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:08,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:54:08,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:08,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:54:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:09,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798615888] [2024-11-18 13:54:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798615888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:54:09,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:54:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2024-11-18 13:54:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636898701] [2024-11-18 13:54:09,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:54:09,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:54:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:54:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:54:09,133 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:54:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:14,473 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-18 13:54:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:54:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-18 13:54:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:14,485 INFO L225 Difference]: With dead ends: 58 [2024-11-18 13:54:14,486 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 13:54:14,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:54:14,487 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:14,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 70 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-18 13:54:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 13:54:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-11-18 13:54:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:54:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-18 13:54:14,494 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2024-11-18 13:54:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:14,494 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-18 13:54:14,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:54:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-18 13:54:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:54:14,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:14,495 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:14,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-18 13:54:14,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:14,696 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -68016377, now seen corresponding path program 1 times [2024-11-18 13:54:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:14,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435461620] [2024-11-18 13:54:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:14,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:14,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:14,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-18 13:54:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:15,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:54:15,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:54:15,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:54:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:54:30,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435461620] [2024-11-18 13:54:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435461620] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:54:30,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:54:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-18 13:54:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775904317] [2024-11-18 13:54:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:54:30,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:54:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:54:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:54:30,113 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-18 13:54:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:33,584 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-18 13:54:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:54:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 18 [2024-11-18 13:54:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:33,585 INFO L225 Difference]: With dead ends: 60 [2024-11-18 13:54:33,585 INFO L226 Difference]: Without dead ends: 52 [2024-11-18 13:54:33,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:54:33,586 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:33,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 13:54:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-18 13:54:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-18 13:54:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:54:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-18 13:54:33,604 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2024-11-18 13:54:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:33,605 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-18 13:54:33,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-18 13:54:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-18 13:54:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:54:33,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:33,605 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:33,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-18 13:54:33,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:33,813 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:33,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 156635680, now seen corresponding path program 1 times [2024-11-18 13:54:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:33,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689543163] [2024-11-18 13:54:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:33,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:33,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:33,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-18 13:54:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:34,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:54:34,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:54:35,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:54:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:54:44,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689543163] [2024-11-18 13:54:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689543163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:54:44,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:54:44,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-18 13:54:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499381182] [2024-11-18 13:54:44,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:54:44,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:54:44,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:54:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:54:44,709 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:54:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:55,066 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-18 13:54:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:54:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2024-11-18 13:54:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:55,068 INFO L225 Difference]: With dead ends: 55 [2024-11-18 13:54:55,068 INFO L226 Difference]: Without dead ends: 46 [2024-11-18 13:54:55,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:54:55,069 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:55,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 156 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-18 13:54:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-18 13:54:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-18 13:54:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:54:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-18 13:54:55,078 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 29 [2024-11-18 13:54:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:55,079 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-18 13:54:55,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:54:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-18 13:54:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 13:54:55,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:55,080 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:55,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:54:55,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:55,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:55,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1854611729, now seen corresponding path program 1 times [2024-11-18 13:54:55,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:54:55,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957933279] [2024-11-18 13:54:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:54:55,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:54:55,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:54:55,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:54:55,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-18 13:54:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:54:56,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:54:56,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:54:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:54:56,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:54:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:54:57,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 13:54:57,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957933279] [2024-11-18 13:54:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957933279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:54:57,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:54:57,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-18 13:54:57,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435454845] [2024-11-18 13:54:57,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:54:57,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:54:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 13:54:57,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:54:57,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:54:57,600 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-18 13:55:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:13,995 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-18 13:55:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 13:55:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 47 [2024-11-18 13:55:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:14,007 INFO L225 Difference]: With dead ends: 132 [2024-11-18 13:55:14,007 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 13:55:14,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:55:14,008 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:14,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 207 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2024-11-18 13:55:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 13:55:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2024-11-18 13:55:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 74 states have internal predecessors, (76), 17 states have call successors, (17), 11 states have call predecessors, (17), 10 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 13:55:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2024-11-18 13:55:14,036 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 47 [2024-11-18 13:55:14,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:14,037 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2024-11-18 13:55:14,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-18 13:55:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2024-11-18 13:55:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 13:55:14,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:14,039 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:14,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-18 13:55:14,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:55:14,240 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:14,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash 348710830, now seen corresponding path program 2 times [2024-11-18 13:55:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 13:55:14,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960967647] [2024-11-18 13:55:14,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:55:14,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 13:55:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 13:55:14,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 13:55:14,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-18 13:55:14,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:55:14,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:55:15,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 13:55:15,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 13:55:17,128 INFO L311 TraceCheckSpWp]: Computing backward predicates...