/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/id_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:46:20,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:46:20,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:46:20,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:46:20,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:46:20,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:46:20,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:46:20,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:46:20,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:46:20,464 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:46:20,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:46:20,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:46:20,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:46:20,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:46:20,466 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:46:20,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:46:20,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:46:20,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:46:20,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:46:20,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:46:20,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:46:20,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:46:20,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:46:20,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:46:20,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:46:20,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:46:20,470 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:46:20,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:46:20,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:46:20,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:46:20,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:46:20,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:46:20,472 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:46:20,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:46:20,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:46:20,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:46:20,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:46:20,655 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:46:20,655 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:46:20,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o10.c [2023-12-16 17:46:21,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:46:21,744 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:46:21,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o10.c [2023-12-16 17:46:21,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54168b2c/719d920262674685a42a8c46c70c2c20/FLAG7a2ecb41a [2023-12-16 17:46:21,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54168b2c/719d920262674685a42a8c46c70c2c20 [2023-12-16 17:46:21,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:46:21,767 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:46:21,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:46:21,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:46:21,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:46:21,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1e2f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21, skipping insertion in model container [2023-12-16 17:46:21,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:46:21,906 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o10.c[516,529] [2023-12-16 17:46:21,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:46:21,923 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:46:21,932 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o10.c[516,529] [2023-12-16 17:46:21,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:46:21,943 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:46:21,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21 WrapperNode [2023-12-16 17:46:21,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:46:21,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:46:21,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:46:21,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:46:21,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,964 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-16 17:46:21,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:46:21,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:46:21,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:46:21,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:46:21,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,983 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]. [2023-12-16 17:46:21,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:21,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:46:21,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:46:21,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:46:21,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:46:21,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (1/1) ... [2023-12-16 17:46:22,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:46:22,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:46:22,050 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) [2023-12-16 17:46:22,097 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 [2023-12-16 17:46:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:46:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:46:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:46:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:46:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-12-16 17:46:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-12-16 17:46:22,173 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:46:22,174 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:46:22,247 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:46:22,270 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:46:22,270 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:46:22,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:46:22 BoogieIcfgContainer [2023-12-16 17:46:22,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:46:22,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:46:22,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:46:22,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:46:22,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:46:21" (1/3) ... [2023-12-16 17:46:22,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799f5923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:46:22, skipping insertion in model container [2023-12-16 17:46:22,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:46:21" (2/3) ... [2023-12-16 17:46:22,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799f5923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:46:22, skipping insertion in model container [2023-12-16 17:46:22,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:46:22" (3/3) ... [2023-12-16 17:46:22,279 INFO L112 eAbstractionObserver]: Analyzing ICFG id_o10.c [2023-12-16 17:46:22,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:46:22,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:46:22,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:46:22,323 INFO L357 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, mHoare=true, 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;@4e5b440d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:46:22,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:46:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 17:46:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:46:22,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:22,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:22,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:22,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2023-12-16 17:46:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661300987] [2023-12-16 17:46:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:46:22,343 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 [2023-12-16 17:46:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:22,446 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) [2023-12-16 17:46:22,449 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 [2023-12-16 17:46:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:46:22,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:46:22,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:46:22,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:46:22,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:22,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661300987] [2023-12-16 17:46:22,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661300987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:46:22,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:46:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:46:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675770057] [2023-12-16 17:46:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:46:22,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:46:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:46:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:46:22,618 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:46:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:22,659 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-16 17:46:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:46:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-16 17:46:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:22,666 INFO L225 Difference]: With dead ends: 23 [2023-12-16 17:46:22,667 INFO L226 Difference]: Without dead ends: 14 [2023-12-16 17:46:22,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:46:22,671 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:22,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:46:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-16 17:46:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-16 17:46:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:46:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-16 17:46:22,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-12-16 17:46:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:22,694 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-16 17:46:22,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:46:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-16 17:46:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 17:46:22,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:22,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:22,700 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 (2)] Ended with exit code 0 [2023-12-16 17:46:22,897 WARN L477 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 [2023-12-16 17:46:22,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2023-12-16 17:46:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19362981] [2023-12-16 17:46:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:46:22,899 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 [2023-12-16 17:46:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:22,900 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) [2023-12-16 17:46:22,901 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 [2023-12-16 17:46:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:46:22,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:46:22,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 17:46:22,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 17:46:23,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19362981] [2023-12-16 17:46:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19362981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:23,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 17:46:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088988814] [2023-12-16 17:46:23,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:23,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:46:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:46:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:46:23,136 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:46:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:23,176 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-12-16 17:46:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:46:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 15 [2023-12-16 17:46:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:23,177 INFO L225 Difference]: With dead ends: 26 [2023-12-16 17:46:23,177 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 17:46:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:46:23,180 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:23,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:46:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 17:46:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 17:46:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 17:46:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-16 17:46:23,189 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2023-12-16 17:46:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:23,189 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-16 17:46:23,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:46:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-16 17:46:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 17:46:23,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:23,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:23,203 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 (3)] Ended with exit code 0 [2023-12-16 17:46:23,393 WARN L477 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 [2023-12-16 17:46:23,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:23,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 54189198, now seen corresponding path program 2 times [2023-12-16 17:46:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:23,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058780710] [2023-12-16 17:46:23,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:46:23,396 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 [2023-12-16 17:46:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:23,398 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) [2023-12-16 17:46:23,399 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 [2023-12-16 17:46:23,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:46:23,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:23,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:46:23,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 17:46:23,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 17:46:23,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058780710] [2023-12-16 17:46:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058780710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:23,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 17:46:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412088468] [2023-12-16 17:46:23,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 17:46:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 17:46:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:46:23,760 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 20 states, 20 states have (on average 1.2) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:46:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:23,896 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-12-16 17:46:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:46:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 27 [2023-12-16 17:46:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:23,898 INFO L225 Difference]: With dead ends: 38 [2023-12-16 17:46:23,898 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 17:46:23,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:46:23,900 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:23,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:46:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 17:46:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-16 17:46:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:46:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-12-16 17:46:23,904 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 27 [2023-12-16 17:46:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:23,904 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-12-16 17:46:23,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:46:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-12-16 17:46:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 17:46:23,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:23,906 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:23,923 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 [2023-12-16 17:46:24,108 WARN L477 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 [2023-12-16 17:46:24,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:24,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1466649358, now seen corresponding path program 3 times [2023-12-16 17:46:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190889840] [2023-12-16 17:46:24,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:46:24,111 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 [2023-12-16 17:46:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:24,112 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) [2023-12-16 17:46:24,121 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 [2023-12-16 17:46:24,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-16 17:46:24,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:46:24,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:46:24,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:46:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-16 17:46:24,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:46:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-16 17:46:24,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:46:24,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190889840] [2023-12-16 17:46:24,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190889840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:46:24,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:46:24,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2023-12-16 17:46:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892536998] [2023-12-16 17:46:24,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:46:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 17:46:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:46:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 17:46:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1085, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 17:46:24,965 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 17:46:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:46:25,372 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2023-12-16 17:46:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 17:46:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 51 [2023-12-16 17:46:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:46:25,373 INFO L225 Difference]: With dead ends: 62 [2023-12-16 17:46:25,373 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 17:46:25,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=1931, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 17:46:25,374 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:46:25,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:46:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 17:46:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-16 17:46:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.027027027027027) internal successors, (38), 38 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (18), 16 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 17:46:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-16 17:46:25,387 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2023-12-16 17:46:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:46:25,387 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-16 17:46:25,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 17:46:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-16 17:46:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 17:46:25,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:46:25,389 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:46:25,403 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:25,592 WARN L477 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 [2023-12-16 17:46:25,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:46:25,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:46:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1904272772, now seen corresponding path program 4 times [2023-12-16 17:46:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:46:25,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693143247] [2023-12-16 17:46:25,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:46:25,594 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 [2023-12-16 17:46:25,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:46:25,595 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) [2023-12-16 17:46:25,598 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 [2023-12-16 17:46:25,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:46:25,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-16 17:46:25,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 17:46:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 17:46:25,714 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-16 17:46:25,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 17:46:25,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:46:25,724 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 17:46:25,916 WARN L477 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 [2023-12-16 17:46:25,919 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-12-16 17:46:25,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:46:25,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:46:25 BoogieIcfgContainer [2023-12-16 17:46:25,945 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:46:25,945 INFO L158 Benchmark]: Toolchain (without parser) took 4177.56ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 145.4MB in the beginning and 176.5MB in the end (delta: -31.1MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,945 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 209.7MB. Free memory was 159.0MB in the beginning and 158.9MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:46:25,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.53ms. Allocated memory is still 209.7MB. Free memory was 145.4MB in the beginning and 134.7MB in the end (delta: 10.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.63ms. Allocated memory is still 209.7MB. Free memory was 134.7MB in the beginning and 133.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,946 INFO L158 Benchmark]: Boogie Preprocessor took 31.01ms. Allocated memory is still 209.7MB. Free memory was 133.1MB in the beginning and 131.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,946 INFO L158 Benchmark]: RCFGBuilder took 273.46ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 131.5MB in the beginning and 211.6MB in the end (delta: -80.0MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,946 INFO L158 Benchmark]: TraceAbstraction took 3669.81ms. Allocated memory is still 251.7MB. Free memory was 210.5MB in the beginning and 176.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:25,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 209.7MB. Free memory was 159.0MB in the beginning and 158.9MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.53ms. Allocated memory is still 209.7MB. Free memory was 145.4MB in the beginning and 134.7MB in the end (delta: 10.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.63ms. Allocated memory is still 209.7MB. Free memory was 134.7MB in the beginning and 133.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.01ms. Allocated memory is still 209.7MB. Free memory was 133.1MB in the beginning and 131.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 273.46ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 131.5MB in the beginning and 211.6MB in the end (delta: -80.0MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3669.81ms. Allocated memory is still 251.7MB. Free memory was 210.5MB in the beginning and 176.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.5MB. Max. memory is 8.0GB. * 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] unsigned int input = __VERIFIER_nondet_uint(); [L13] CALL, EXPR id(input) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, x=10] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [input=10] [L13] unsigned int result = id(input); [L14] COND TRUE result == 10 VAL [input=10, result=10] [L15] reach_error() VAL [input=10, result=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 817 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 750 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 67 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 188/376 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 proved your program to be incorrect! [2023-12-16 17:46:25,998 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...