/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 22:24:28,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 22:24:28,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 22:24:28,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 22:24:28,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 22:24:28,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 22:24:28,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 22:24:28,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 22:24:28,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 22:24:28,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 22:24:28,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 22:24:28,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 22:24:28,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 22:24:28,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 22:24:28,982 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 22:24:28,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 22:24:28,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 22:24:28,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 22:24:28,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 22:24:28,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 22:24:28,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 22:24:28,984 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 22:24:28,984 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 22:24:28,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 22:24:28,985 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 22:24:28,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 22:24:28,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 22:24:28,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 22:24:28,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 22:24:28,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 22:24:28,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 22:24:28,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 22:24:28,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 22:24:28,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 22:24:28,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 22:24:28,988 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 22:24:28,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:28,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 22:24:28,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 22:24:28,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 22:24:28,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 22:24:28,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 22:24:28,989 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 22:24:28,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 22:24:29,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 22:24:29,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 22:24:29,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 22:24:29,170 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 22:24:29,170 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 22:24:29,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-16 22:24:30,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 22:24:30,601 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 22:24:30,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-16 22:24:30,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f474cc8/35e3fee7b609467c8094baac27d721d3/FLAG7743fb50a [2023-12-16 22:24:30,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f474cc8/35e3fee7b609467c8094baac27d721d3 [2023-12-16 22:24:30,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 22:24:30,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 22:24:30,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 22:24:30,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 22:24:30,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 22:24:30,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:24:30" (1/1) ... [2023-12-16 22:24:30,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fd41a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:30, skipping insertion in model container [2023-12-16 22:24:30,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:24:30" (1/1) ... [2023-12-16 22:24:30,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 22:24:30,782 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-12-16 22:24:30,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 22:24:30,979 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 22:24:31,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-12-16 22:24:31,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 22:24:31,066 INFO L206 MainTranslator]: Completed translation [2023-12-16 22:24:31,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31 WrapperNode [2023-12-16 22:24:31,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 22:24:31,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 22:24:31,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 22:24:31,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 22:24:31,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,127 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 429 [2023-12-16 22:24:31,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 22:24:31,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 22:24:31,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 22:24:31,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 22:24:31,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,183 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 22:24:31,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 22:24:31,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 22:24:31,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 22:24:31,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 22:24:31,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (1/1) ... [2023-12-16 22:24:31,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 22:24:31,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 22:24:31,251 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 22:24:31,276 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 22:24:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 22:24:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 22:24:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 22:24:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 22:24:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 22:24:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 22:24:31,429 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 22:24:31,431 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 22:24:31,856 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 22:24:31,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 22:24:31,890 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 22:24:31,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:24:31 BoogieIcfgContainer [2023-12-16 22:24:31,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 22:24:31,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 22:24:31,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 22:24:31,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 22:24:31,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:24:30" (1/3) ... [2023-12-16 22:24:31,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b0f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:24:31, skipping insertion in model container [2023-12-16 22:24:31,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:24:31" (2/3) ... [2023-12-16 22:24:31,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b0f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:24:31, skipping insertion in model container [2023-12-16 22:24:31,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:24:31" (3/3) ... [2023-12-16 22:24:31,899 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-16 22:24:31,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 22:24:31,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 22:24:31,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 22:24:31,960 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;@2f069676, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 22:24:31,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 22:24:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 22:24:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 22:24:31,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:31,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 22:24:31,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:31,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 722107577, now seen corresponding path program 1 times [2023-12-16 22:24:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:31,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921012394] [2023-12-16 22:24:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:24:31,990 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 22:24:31,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:32,002 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 22:24:32,004 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 22:24:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:24:32,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 22:24:32,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 22:24:32,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 22:24:32,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921012394] [2023-12-16 22:24:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921012394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 22:24:32,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 22:24:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 22:24:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210651680] [2023-12-16 22:24:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 22:24:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 22:24:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 22:24:32,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 22:24:32,272 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 22:24:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:32,302 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2023-12-16 22:24:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 22:24:32,306 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-16 22:24:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:32,310 INFO L225 Difference]: With dead ends: 29 [2023-12-16 22:24:32,310 INFO L226 Difference]: Without dead ends: 14 [2023-12-16 22:24:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 22:24:32,316 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:32,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 22:24:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-16 22:24:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-16 22:24:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 22:24:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-16 22:24:32,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2023-12-16 22:24:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:32,341 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-16 22:24:32,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 22:24:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-16 22:24:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 22:24:32,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:32,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 22:24:32,360 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 22:24:32,548 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 22:24:32,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:32,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1037531317, now seen corresponding path program 1 times [2023-12-16 22:24:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705074564] [2023-12-16 22:24:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:24:32,550 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 22:24:32,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:32,551 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 22:24:32,553 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 22:24:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:24:32,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 22:24:32,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 22:24:32,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 22:24:32,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705074564] [2023-12-16 22:24:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705074564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 22:24:32,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 22:24:32,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 22:24:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721689354] [2023-12-16 22:24:32,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 22:24:32,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 22:24:32,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 22:24:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 22:24:32,987 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 22:24:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:33,156 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-16 22:24:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 22:24:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-16 22:24:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:33,157 INFO L225 Difference]: With dead ends: 23 [2023-12-16 22:24:33,157 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 22:24:33,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 22:24:33,158 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:33,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 22:24:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 22:24:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-12-16 22:24:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 22:24:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-16 22:24:33,164 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2023-12-16 22:24:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:33,165 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-16 22:24:33,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 22:24:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-16 22:24:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 22:24:33,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:33,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 22:24:33,172 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 [2023-12-16 22:24:33,368 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 22:24:33,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1248997715, now seen corresponding path program 1 times [2023-12-16 22:24:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:33,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538332479] [2023-12-16 22:24:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:24:33,370 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 22:24:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:33,391 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 22:24:33,395 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 22:24:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:24:33,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 22:24:33,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 22:24:34,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:34,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538332479] [2023-12-16 22:24:34,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538332479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [361001091] [2023-12-16 22:24:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:24:34,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:24:34,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:24:34,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 22:24:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:24:34,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 22:24:34,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 22:24:35,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [361001091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:35,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:24:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 22:24:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183987145] [2023-12-16 22:24:35,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:24:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 22:24:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 22:24:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 22:24:35,244 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 22:24:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:35,541 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-12-16 22:24:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 22:24:35,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-12-16 22:24:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:35,542 INFO L225 Difference]: With dead ends: 30 [2023-12-16 22:24:35,542 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 22:24:35,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-16 22:24:35,543 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 22:24:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 22:24:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-16 22:24:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 22:24:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-12-16 22:24:35,548 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2023-12-16 22:24:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-12-16 22:24:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 22:24:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-12-16 22:24:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 22:24:35,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:35,550 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-16 22:24:35,558 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 22:24:35,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 22:24:35,958 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:35,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:35,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 252823989, now seen corresponding path program 2 times [2023-12-16 22:24:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109630512] [2023-12-16 22:24:35,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 22:24:35,960 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 22:24:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:35,962 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 22:24:35,970 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 22:24:36,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 22:24:36,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:36,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 22:24:36,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 22:24:37,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:37,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109630512] [2023-12-16 22:24:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109630512] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [21785529] [2023-12-16 22:24:37,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 22:24:37,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:24:37,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:24:37,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 22:24:37,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 22:24:37,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:37,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 22:24:37,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 22:24:38,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [21785529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:38,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:24:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-16 22:24:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496494560] [2023-12-16 22:24:38,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:24:38,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 22:24:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 22:24:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 22:24:38,107 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 22:24:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:38,533 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-12-16 22:24:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 22:24:38,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-12-16 22:24:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:38,535 INFO L225 Difference]: With dead ends: 37 [2023-12-16 22:24:38,535 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 22:24:38,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 22:24:38,536 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:38,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 22:24:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 22:24:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-16 22:24:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 22:24:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-12-16 22:24:38,542 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 46 [2023-12-16 22:24:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:38,542 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-12-16 22:24:38,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 22:24:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-12-16 22:24:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 22:24:38,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:38,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-16 22:24:38,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 22:24:38,765 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 22:24:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 22:24:38,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:38,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 809983405, now seen corresponding path program 3 times [2023-12-16 22:24:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129685478] [2023-12-16 22:24:38,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 22:24:38,956 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 22:24:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:38,957 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) [2023-12-16 22:24:38,959 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 [2023-12-16 22:24:40,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-16 22:24:40,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:40,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-16 22:24:40,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 22:24:41,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:41,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129685478] [2023-12-16 22:24:41,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129685478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [351166724] [2023-12-16 22:24:41,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 22:24:41,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:41,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:24:41,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:24:41,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 22:24:41,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-16 22:24:41,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:41,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 22:24:41,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 22:24:42,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [351166724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:42,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:24:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-16 22:24:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416870505] [2023-12-16 22:24:42,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:24:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 22:24:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 22:24:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 22:24:42,366 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 22:24:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:42,975 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-12-16 22:24:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 22:24:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-12-16 22:24:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:42,977 INFO L225 Difference]: With dead ends: 44 [2023-12-16 22:24:42,977 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 22:24:42,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-16 22:24:42,977 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:42,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 22:24:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 22:24:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-16 22:24:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 22:24:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-16 22:24:42,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 61 [2023-12-16 22:24:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:42,987 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-16 22:24:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 22:24:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-16 22:24:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 22:24:42,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:42,988 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2023-12-16 22:24:42,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 22:24:43,211 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 22:24:43,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 22:24:43,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:43,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash 640178869, now seen corresponding path program 4 times [2023-12-16 22:24:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:43,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888613296] [2023-12-16 22:24:43,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 22:24:43,404 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 22:24:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:43,406 INFO L229 MonitoredProcess]: Starting monitored process 10 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 22:24:43,408 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 (10)] Waiting until timeout for monitored process [2023-12-16 22:24:46,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 22:24:46,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:46,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 22:24:46,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 22:24:47,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:47,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888613296] [2023-12-16 22:24:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888613296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1189982867] [2023-12-16 22:24:47,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 22:24:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:24:47,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:24:47,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 22:24:47,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 22:24:47,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:48,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 22:24:48,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 22:24:48,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:48,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1189982867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:48,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:24:48,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-16 22:24:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776487110] [2023-12-16 22:24:48,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:24:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 22:24:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 22:24:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 22:24:48,583 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 22:24:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:49,174 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2023-12-16 22:24:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 22:24:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 76 [2023-12-16 22:24:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:49,175 INFO L225 Difference]: With dead ends: 51 [2023-12-16 22:24:49,175 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 22:24:49,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-16 22:24:49,177 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:49,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 22:24:49,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 22:24:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-12-16 22:24:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 22:24:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2023-12-16 22:24:49,193 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 76 [2023-12-16 22:24:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:49,193 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2023-12-16 22:24:49,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 22:24:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2023-12-16 22:24:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 22:24:49,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:49,194 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1] [2023-12-16 22:24:49,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-16 22:24:49,417 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 (10)] Ended with exit code 0 [2023-12-16 22:24:49,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /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 22:24:49,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:49,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -383996755, now seen corresponding path program 5 times [2023-12-16 22:24:49,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:49,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390088947] [2023-12-16 22:24:49,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 22:24:49,620 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 22:24:49,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:49,621 INFO L229 MonitoredProcess]: Starting monitored process 12 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 22:24:49,622 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 (12)] Waiting until timeout for monitored process [2023-12-16 22:24:51,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-16 22:24:51,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:51,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-16 22:24:51,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 22:24:52,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:52,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:24:52,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390088947] [2023-12-16 22:24:52,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390088947] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:52,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2039051894] [2023-12-16 22:24:52,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 22:24:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:24:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:24:52,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:24:52,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-16 22:24:54,405 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-16 22:24:54,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:24:54,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-16 22:24:54,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:24:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 22:24:55,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:24:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2039051894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:24:55,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:24:55,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-16 22:24:55,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635631904] [2023-12-16 22:24:55,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:24:55,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 22:24:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:24:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 22:24:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 22:24:55,099 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 22:24:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:24:56,017 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-12-16 22:24:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 22:24:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 91 [2023-12-16 22:24:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:24:56,018 INFO L225 Difference]: With dead ends: 58 [2023-12-16 22:24:56,018 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 22:24:56,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-16 22:24:56,019 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 22:24:56,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 159 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 22:24:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 22:24:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2023-12-16 22:24:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-16 22:24:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2023-12-16 22:24:56,029 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 91 [2023-12-16 22:24:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:24:56,029 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2023-12-16 22:24:56,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 22:24:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-12-16 22:24:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 22:24:56,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:24:56,030 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1] [2023-12-16 22:24:56,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-16 22:24:56,245 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 (12)] Forceful destruction successful, exit code 0 [2023-12-16 22:24:56,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /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 22:24:56,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:24:56,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:24:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 204155829, now seen corresponding path program 6 times [2023-12-16 22:24:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:24:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571529097] [2023-12-16 22:24:56,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 22:24:56,434 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 22:24:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:24:56,435 INFO L229 MonitoredProcess]: Starting monitored process 14 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 22:24:56,436 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 (14)] Waiting until timeout for monitored process [2023-12-16 22:25:03,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-16 22:25:03,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:25:03,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 349 conjunts are in the unsatisfiable core [2023-12-16 22:25:03,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:25:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 21 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-16 22:25:18,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:25:19,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:25:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571529097] [2023-12-16 22:25:19,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571529097] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 22:25:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1863768848] [2023-12-16 22:25:19,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 22:25:19,325 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 22:25:19,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 22:25:19,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 22:25:19,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-16 22:25:21,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-16 22:25:21,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:25:21,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 468 conjunts are in the unsatisfiable core [2023-12-16 22:25:21,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 22:25:43,389 WARN L340 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 22:25:43,410 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 22:25:43,410 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 22:25:43,588 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 22:25:43,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-16 22:25:43,812 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 (14)] Forceful destruction successful, exit code 0 [2023-12-16 22:25:44,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 22:25:44,001 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 107 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 40 known predicates. [2023-12-16 22:25:44,005 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-12-16 22:25:44,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 22:25:44,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 10:25:44 BoogieIcfgContainer [2023-12-16 22:25:44,007 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 22:25:44,008 INFO L158 Benchmark]: Toolchain (without parser) took 73379.23ms. Allocated memory was 176.2MB in the beginning and 784.3MB in the end (delta: 608.2MB). Free memory was 124.0MB in the beginning and 453.9MB in the end (delta: -329.9MB). Peak memory consumption was 279.0MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,008 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 22:25:44,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.30ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 99.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.14ms. Allocated memory is still 176.2MB. Free memory was 99.9MB in the beginning and 96.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,009 INFO L158 Benchmark]: Boogie Preprocessor took 96.85ms. Allocated memory is still 176.2MB. Free memory was 96.0MB in the beginning and 91.1MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,009 INFO L158 Benchmark]: RCFGBuilder took 664.54ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 91.1MB in the beginning and 166.4MB in the end (delta: -75.3MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,009 INFO L158 Benchmark]: TraceAbstraction took 72115.39ms. Allocated memory was 231.7MB in the beginning and 784.3MB in the end (delta: 552.6MB). Free memory was 165.4MB in the beginning and 453.9MB in the end (delta: -288.5MB). Peak memory consumption was 264.1MB. Max. memory is 8.0GB. [2023-12-16 22:25:44,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 436.30ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 99.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.14ms. Allocated memory is still 176.2MB. Free memory was 99.9MB in the beginning and 96.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 96.85ms. Allocated memory is still 176.2MB. Free memory was 96.0MB in the beginning and 91.1MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 664.54ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 91.1MB in the beginning and 166.4MB in the end (delta: -75.3MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. * TraceAbstraction took 72115.39ms. Allocated memory was 231.7MB in the beginning and 784.3MB in the end (delta: 552.6MB). Free memory was 165.4MB in the beginning and 453.9MB in the end (delta: -288.5MB). Peak memory consumption was 264.1MB. 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 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 107 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 40 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.1s, OverallIterations: 8, TraceHistogramMax: 14, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 503 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 383 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 677 IncrementalHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 120 mSDtfsCounter, 677 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 691 GetRequests, 628 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=7, InterpolantAutomatonStates: 56, 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, 6 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 642 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 630 ConstructedInterpolants, 20 QuantifiedInterpolants, 5683 SizeOfPredicates, 450 NumberOfNonLiveVariables, 11504 ConjunctsInSsa, 477 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 1288/1748 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: Timeout Completed graceful shutdown