/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:45:36,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:45:36,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:45:36,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:45:36,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:45:36,300 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:45:36,301 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:45:36,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:45:36,302 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:45:36,305 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:45:36,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:45:36,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:45:36,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:45:36,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:45:36,308 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:45:36,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:45:36,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:45:36,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:45:36,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:45:36,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:45:36,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:45:36,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:45:36,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:45:36,312 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:45:36,312 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:45:36,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:45:36,312 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:45:36,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:45:36,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:45:36,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:45:36,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:45:36,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:45:36,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:45:36,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:45:36,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:45:36,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:45:36,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:45:36,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:45:36,316 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:45:36,316 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:45:36,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:45:36,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:45:36,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:45:36,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:45:36,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:45:36,317 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:45:36,317 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:45:36,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:45:36,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:45:36,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:45:36,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:45:36,563 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:45:36,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2023-12-16 17:45:37,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:45:37,886 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:45:37,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2023-12-16 17:45:37,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e14dc9b/2a182bd1e57b4e79984de146de2145fd/FLAGbdb272a87 [2023-12-16 17:45:37,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e14dc9b/2a182bd1e57b4e79984de146de2145fd [2023-12-16 17:45:37,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:45:37,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:45:37,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:45:37,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:45:37,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:45:37,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:45:37" (1/1) ... [2023-12-16 17:45:37,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a71fcc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:37, skipping insertion in model container [2023-12-16 17:45:37,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:45:37" (1/1) ... [2023-12-16 17:45:37,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:45:38,086 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c[946,959] [2023-12-16 17:45:38,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:45:38,103 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:45:38,116 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c[946,959] [2023-12-16 17:45:38,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:45:38,128 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:45:38,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38 WrapperNode [2023-12-16 17:45:38,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:45:38,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:45:38,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:45:38,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:45:38,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,161 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-16 17:45:38,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:45:38,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:45:38,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:45:38,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:45:38,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,193 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 17:45:38,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:45:38,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:45:38,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:45:38,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:45:38,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (1/1) ... [2023-12-16 17:45:38,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:45:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:45:38,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:45:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:45:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:45:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-16 17:45:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-16 17:45:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-16 17:45:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-16 17:45:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:45:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:45:38,276 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 17:45:38,345 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:45:38,352 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:45:38,511 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:45:38,546 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:45:38,547 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:45:38,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:45:38 BoogieIcfgContainer [2023-12-16 17:45:38,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:45:38,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:45:38,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:45:38,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:45:38,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:45:37" (1/3) ... [2023-12-16 17:45:38,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d28e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:45:38, skipping insertion in model container [2023-12-16 17:45:38,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:45:38" (2/3) ... [2023-12-16 17:45:38,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d28e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:45:38, skipping insertion in model container [2023-12-16 17:45:38,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:45:38" (3/3) ... [2023-12-16 17:45:38,554 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2023-12-16 17:45:38,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:45:38,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:45:38,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:45:38,621 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;@1264c55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:45:38,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:45:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:45:38,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:38,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:38,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:38,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1178273046, now seen corresponding path program 1 times [2023-12-16 17:45:38,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:38,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590427084] [2023-12-16 17:45:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:38,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:38,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:45:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:38,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:45:38,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:45:38,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:45:38,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:38,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590427084] [2023-12-16 17:45:38,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590427084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:45:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:45:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:45:38,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502835818] [2023-12-16 17:45:38,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:45:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:45:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:38,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:45:38,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:45:38,818 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:45:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:38,913 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-12-16 17:45:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:45:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-16 17:45:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:38,922 INFO L225 Difference]: With dead ends: 32 [2023-12-16 17:45:38,922 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 17:45:38,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:45:38,927 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:38,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:45:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 17:45:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 17:45:38,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 17:45:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 17:45:38,958 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 9 [2023-12-16 17:45:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:38,959 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 17:45:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:45:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 17:45:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 17:45:38,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:38,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:38,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:39,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:39,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1422996679, now seen corresponding path program 1 times [2023-12-16 17:45:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:39,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509988043] [2023-12-16 17:45:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:39,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:39,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:39,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:45:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:39,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:45:39,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:45:39,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:45:39,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509988043] [2023-12-16 17:45:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509988043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:45:39,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:45:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:45:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098481459] [2023-12-16 17:45:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:45:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:45:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:45:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:45:39,218 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:45:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:39,275 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-16 17:45:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:45:39,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-16 17:45:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:39,277 INFO L225 Difference]: With dead ends: 30 [2023-12-16 17:45:39,277 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 17:45:39,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:45:39,278 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:39,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:45:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 17:45:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-16 17:45:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 17:45:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 17:45:39,286 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2023-12-16 17:45:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:39,286 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 17:45:39,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:45:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 17:45:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 17:45:39,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:39,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:39,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 17:45:39,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:39,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:39,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1917903498, now seen corresponding path program 1 times [2023-12-16 17:45:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:39,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788370812] [2023-12-16 17:45:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:39,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:39,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:45:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:39,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:39,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:39,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:39,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788370812] [2023-12-16 17:45:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788370812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:39,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663326860] [2023-12-16 17:45:39,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:39,999 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:40,177 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-16 17:45:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-16 17:45:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:40,179 INFO L225 Difference]: With dead ends: 36 [2023-12-16 17:45:40,179 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 17:45:40,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:40,182 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:40,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 17:45:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-16 17:45:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-16 17:45:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-16 17:45:40,198 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 21 [2023-12-16 17:45:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:40,198 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-16 17:45:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-16 17:45:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 17:45:40,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:40,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:40,209 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 (4)] Ended with exit code 0 [2023-12-16 17:45:40,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:40,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -773369340, now seen corresponding path program 1 times [2023-12-16 17:45:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461802752] [2023-12-16 17:45:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:40,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:40,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:40,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:40,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:45:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:40,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:40,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:40,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:45:40,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461802752] [2023-12-16 17:45:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461802752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:40,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:40,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:40,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34706159] [2023-12-16 17:45:40,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:40,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:40,693 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:40,847 INFO L93 Difference]: Finished difference Result 60 states and 95 transitions. [2023-12-16 17:45:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-16 17:45:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:40,849 INFO L225 Difference]: With dead ends: 60 [2023-12-16 17:45:40,849 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 17:45:40,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:40,851 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:40,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 17:45:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-16 17:45:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-16 17:45:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2023-12-16 17:45:40,860 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 22 [2023-12-16 17:45:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:40,860 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-12-16 17:45:40,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:45:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2023-12-16 17:45:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:45:40,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:40,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:40,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:41,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:41,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1000055446, now seen corresponding path program 1 times [2023-12-16 17:45:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579847386] [2023-12-16 17:45:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:41,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:41,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:45:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:41,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:41,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 17:45:41,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:45:41,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:41,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579847386] [2023-12-16 17:45:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579847386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:41,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:41,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473448937] [2023-12-16 17:45:41,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:41,594 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:41,823 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-16 17:45:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:41,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 33 [2023-12-16 17:45:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:41,827 INFO L225 Difference]: With dead ends: 48 [2023-12-16 17:45:41,827 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 17:45:41,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:41,828 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:41,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 87 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 17:45:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-16 17:45:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-16 17:45:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-12-16 17:45:41,850 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 33 [2023-12-16 17:45:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:41,850 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-12-16 17:45:41,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-12-16 17:45:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:45:41,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:41,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:41,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:42,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:42,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:42,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1077323161, now seen corresponding path program 1 times [2023-12-16 17:45:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569278177] [2023-12-16 17:45:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:42,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:42,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:42,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:45:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:42,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:42,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:45:42,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:45:42,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569278177] [2023-12-16 17:45:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569278177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:42,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961686219] [2023-12-16 17:45:42,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:42,379 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:42,574 INFO L93 Difference]: Finished difference Result 78 states and 149 transitions. [2023-12-16 17:45:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 34 [2023-12-16 17:45:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:42,576 INFO L225 Difference]: With dead ends: 78 [2023-12-16 17:45:42,576 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 17:45:42,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:42,578 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:42,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 17:45:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-16 17:45:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (37), 14 states have call predecessors, (37), 10 states have call successors, (37) [2023-12-16 17:45:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 76 transitions. [2023-12-16 17:45:42,588 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 76 transitions. Word has length 34 [2023-12-16 17:45:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:42,589 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 76 transitions. [2023-12-16 17:45:42,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:45:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 76 transitions. [2023-12-16 17:45:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 17:45:42,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:42,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:42,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:42,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:42,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:42,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash -797673590, now seen corresponding path program 2 times [2023-12-16 17:45:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:42,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882732120] [2023-12-16 17:45:42,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:42,796 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 17:45:42,796 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 17:45:42,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:42,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:42,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:42,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 17:45:42,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:45:43,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882732120] [2023-12-16 17:45:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882732120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:43,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-16 17:45:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466328387] [2023-12-16 17:45:43,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:43,494 INFO L87 Difference]: Start difference. First operand 45 states and 76 transitions. Second operand has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:43,863 INFO L93 Difference]: Finished difference Result 69 states and 141 transitions. [2023-12-16 17:45:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:45:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 45 [2023-12-16 17:45:43,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:43,866 INFO L225 Difference]: With dead ends: 69 [2023-12-16 17:45:43,867 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 17:45:43,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:43,868 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:43,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 140 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:45:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 17:45:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2023-12-16 17:45:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (47), 16 states have call predecessors, (47), 11 states have call successors, (47) [2023-12-16 17:45:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 89 transitions. [2023-12-16 17:45:43,885 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 89 transitions. Word has length 45 [2023-12-16 17:45:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:43,885 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 89 transitions. [2023-12-16 17:45:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 89 transitions. [2023-12-16 17:45:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 17:45:43,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:43,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:43,896 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 17:45:44,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:44,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:44,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1078970546, now seen corresponding path program 1 times [2023-12-16 17:45:44,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781291160] [2023-12-16 17:45:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:44,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:44,090 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:44,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:45:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:44,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:44,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 17:45:44,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:45:44,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781291160] [2023-12-16 17:45:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781291160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:44,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-16 17:45:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999595258] [2023-12-16 17:45:44,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:44,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:44,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:44,504 INFO L87 Difference]: Start difference. First operand 49 states and 89 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:44,722 INFO L93 Difference]: Finished difference Result 107 states and 251 transitions. [2023-12-16 17:45:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:45:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 46 [2023-12-16 17:45:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:44,723 INFO L225 Difference]: With dead ends: 107 [2023-12-16 17:45:44,723 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 17:45:44,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:45:44,725 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:44,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 17:45:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-16 17:45:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-16 17:45:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-16 17:45:44,741 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 46 [2023-12-16 17:45:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:44,742 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-16 17:45:44,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-16 17:45:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-16 17:45:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 17:45:44,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:44,744 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:44,753 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:44,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:44,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 82175210, now seen corresponding path program 3 times [2023-12-16 17:45:44,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:44,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207391253] [2023-12-16 17:45:44,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:44,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:44,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:44,952 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 17:45:44,953 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 17:45:44,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 17:45:44,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:44,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:45:44,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 17:45:45,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 17:45:45,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:45,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207391253] [2023-12-16 17:45:45,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207391253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:45,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:45,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 17:45:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286437179] [2023-12-16 17:45:45,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:45,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:45:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:45:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:45:45,262 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 17:45:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:45,409 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2023-12-16 17:45:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:45:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 57 [2023-12-16 17:45:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:45,411 INFO L225 Difference]: With dead ends: 82 [2023-12-16 17:45:45,411 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 17:45:45,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:45,413 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:45,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 17:45:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2023-12-16 17:45:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-16 17:45:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-16 17:45:45,426 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 57 [2023-12-16 17:45:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:45,426 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-16 17:45:45,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-16 17:45:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-16 17:45:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 17:45:45,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:45,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:45,434 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:45,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 17:45:45,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:45,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1783295408, now seen corresponding path program 2 times [2023-12-16 17:45:45,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:45,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293817649] [2023-12-16 17:45:45,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:45,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:45,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:45,634 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 (11)] Waiting until timeout for monitored process [2023-12-16 17:45:45,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:45,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:45,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:45:45,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:45:45,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:45:46,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293817649] [2023-12-16 17:45:46,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293817649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:46,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:46,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-16 17:45:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915091269] [2023-12-16 17:45:46,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 17:45:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 17:45:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:45:46,606 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-16 17:45:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:47,197 INFO L93 Difference]: Finished difference Result 162 states and 459 transitions. [2023-12-16 17:45:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:45:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 58 [2023-12-16 17:45:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:47,200 INFO L225 Difference]: With dead ends: 162 [2023-12-16 17:45:47,200 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 17:45:47,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:45:47,202 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:47,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:45:47,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 17:45:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-16 17:45:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 59 states have internal predecessors, (61), 20 states have call successors, (20), 5 states have call predecessors, (20), 22 states have return successors, (150), 33 states have call predecessors, (150), 20 states have call successors, (150) [2023-12-16 17:45:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2023-12-16 17:45:47,234 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 58 [2023-12-16 17:45:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:47,234 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2023-12-16 17:45:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-16 17:45:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2023-12-16 17:45:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 17:45:47,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:47,237 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:47,243 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:47,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:47,440 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:47,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2115449141, now seen corresponding path program 2 times [2023-12-16 17:45:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:47,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869421301] [2023-12-16 17:45:47,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:47,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:47,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:47,442 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 17:45:47,443 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 17:45:47,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:47,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:47,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:47,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 17:45:47,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 17:45:48,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869421301] [2023-12-16 17:45:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869421301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:48,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-16 17:45:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154716007] [2023-12-16 17:45:48,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:48,095 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 14 states have internal predecessors, (40), 10 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:45:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:48,406 INFO L93 Difference]: Finished difference Result 164 states and 546 transitions. [2023-12-16 17:45:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:45:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 14 states have internal predecessors, (40), 10 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 70 [2023-12-16 17:45:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:48,411 INFO L225 Difference]: With dead ends: 164 [2023-12-16 17:45:48,411 INFO L226 Difference]: Without dead ends: 160 [2023-12-16 17:45:48,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:48,412 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:48,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 123 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-16 17:45:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 104. [2023-12-16 17:45:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 63 states have internal predecessors, (65), 20 states have call successors, (20), 5 states have call predecessors, (20), 24 states have return successors, (162), 35 states have call predecessors, (162), 20 states have call successors, (162) [2023-12-16 17:45:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 247 transitions. [2023-12-16 17:45:48,441 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 247 transitions. Word has length 70 [2023-12-16 17:45:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 247 transitions. [2023-12-16 17:45:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 14 states have internal predecessors, (40), 10 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:45:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 247 transitions. [2023-12-16 17:45:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 17:45:48,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:48,443 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:48,451 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 17:45:48,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 17:45:48,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:48,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 961346532, now seen corresponding path program 1 times [2023-12-16 17:45:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78129379] [2023-12-16 17:45:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:48,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:48,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:48,648 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:48,649 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 (13)] Waiting until timeout for monitored process [2023-12-16 17:45:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:48,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:48,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-16 17:45:48,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-16 17:45:49,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:49,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78129379] [2023-12-16 17:45:49,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78129379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:49,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:49,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:49,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545645369] [2023-12-16 17:45:49,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:49,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:49,086 INFO L87 Difference]: Start difference. First operand 104 states and 247 transitions. Second operand has 12 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:45:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:49,266 INFO L93 Difference]: Finished difference Result 165 states and 488 transitions. [2023-12-16 17:45:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:49,267 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) Word has length 72 [2023-12-16 17:45:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:49,270 INFO L225 Difference]: With dead ends: 165 [2023-12-16 17:45:49,270 INFO L226 Difference]: Without dead ends: 161 [2023-12-16 17:45:49,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:49,271 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:49,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-16 17:45:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 105. [2023-12-16 17:45:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.1) internal successors, (66), 63 states have internal predecessors, (66), 20 states have call successors, (20), 5 states have call predecessors, (20), 24 states have return successors, (160), 36 states have call predecessors, (160), 20 states have call successors, (160) [2023-12-16 17:45:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 246 transitions. [2023-12-16 17:45:49,297 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 246 transitions. Word has length 72 [2023-12-16 17:45:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:49,298 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 246 transitions. [2023-12-16 17:45:49,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:45:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 246 transitions. [2023-12-16 17:45:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 17:45:49,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:49,300 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:49,305 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 (13)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:49,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:49,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1409128243, now seen corresponding path program 2 times [2023-12-16 17:45:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211404069] [2023-12-16 17:45:49,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:49,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:49,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:49,505 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 17:45:49,508 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 17:45:49,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:49,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:49,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:45:49,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-16 17:45:49,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 29 proven. 32 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-16 17:45:49,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:49,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211404069] [2023-12-16 17:45:49,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211404069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:49,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:49,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-16 17:45:49,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196867886] [2023-12-16 17:45:49,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:49,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:45:49,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:45:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:45:49,862 INFO L87 Difference]: Start difference. First operand 105 states and 246 transitions. Second operand has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:45:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:50,039 INFO L93 Difference]: Finished difference Result 252 states and 817 transitions. [2023-12-16 17:45:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:45:50,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2023-12-16 17:45:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:50,042 INFO L225 Difference]: With dead ends: 252 [2023-12-16 17:45:50,042 INFO L226 Difference]: Without dead ends: 149 [2023-12-16 17:45:50,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:50,045 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:50,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-16 17:45:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 120. [2023-12-16 17:45:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 68 states have (on average 1.088235294117647) internal successors, (74), 71 states have internal predecessors, (74), 23 states have call successors, (23), 5 states have call predecessors, (23), 28 states have return successors, (216), 43 states have call predecessors, (216), 23 states have call successors, (216) [2023-12-16 17:45:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 313 transitions. [2023-12-16 17:45:50,066 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 313 transitions. Word has length 73 [2023-12-16 17:45:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:50,066 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 313 transitions. [2023-12-16 17:45:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:45:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 313 transitions. [2023-12-16 17:45:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 17:45:50,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:50,073 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:50,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:50,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 17:45:50,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:50,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1607563537, now seen corresponding path program 1 times [2023-12-16 17:45:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784519781] [2023-12-16 17:45:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:45:50,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:50,278 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:50,307 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 (15)] Waiting until timeout for monitored process [2023-12-16 17:45:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:50,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:50,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 82 proven. 109 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-16 17:45:50,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 82 proven. 114 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-12-16 17:45:50,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784519781] [2023-12-16 17:45:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784519781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:50,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:50,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2023-12-16 17:45:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098012326] [2023-12-16 17:45:50,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:50,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:45:50,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:45:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:45:50,912 INFO L87 Difference]: Start difference. First operand 120 states and 313 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:51,098 INFO L93 Difference]: Finished difference Result 197 states and 579 transitions. [2023-12-16 17:45:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 17:45:51,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) Word has length 147 [2023-12-16 17:45:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:51,102 INFO L225 Difference]: With dead ends: 197 [2023-12-16 17:45:51,102 INFO L226 Difference]: Without dead ends: 171 [2023-12-16 17:45:51,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:51,103 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:51,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 94 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-16 17:45:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 127. [2023-12-16 17:45:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 76 states have internal predecessors, (83), 24 states have call successors, (24), 7 states have call predecessors, (24), 28 states have return successors, (217), 43 states have call predecessors, (217), 24 states have call successors, (217) [2023-12-16 17:45:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 324 transitions. [2023-12-16 17:45:51,134 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 324 transitions. Word has length 147 [2023-12-16 17:45:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:51,134 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 324 transitions. [2023-12-16 17:45:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 324 transitions. [2023-12-16 17:45:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 17:45:51,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:51,137 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:51,144 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 (15)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:51,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:51,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:51,341 INFO L85 PathProgramCache]: Analyzing trace with hash -681928779, now seen corresponding path program 2 times [2023-12-16 17:45:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:51,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451616297] [2023-12-16 17:45:51,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:51,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:51,343 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:51,344 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 (16)] Waiting until timeout for monitored process [2023-12-16 17:45:51,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:51,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:51,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:51,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 95 proven. 36 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-16 17:45:51,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 95 proven. 41 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-16 17:45:51,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451616297] [2023-12-16 17:45:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451616297] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:51,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2023-12-16 17:45:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224595827] [2023-12-16 17:45:51,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:51,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:45:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:45:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:45:51,929 INFO L87 Difference]: Start difference. First operand 127 states and 324 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:52,118 INFO L93 Difference]: Finished difference Result 149 states and 381 transitions. [2023-12-16 17:45:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 17:45:52,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) Word has length 111 [2023-12-16 17:45:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:52,121 INFO L225 Difference]: With dead ends: 149 [2023-12-16 17:45:52,121 INFO L226 Difference]: Without dead ends: 145 [2023-12-16 17:45:52,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:52,122 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:52,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 96 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:52,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-16 17:45:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-12-16 17:45:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 76 states have internal predecessors, (83), 24 states have call successors, (24), 7 states have call predecessors, (24), 28 states have return successors, (217), 43 states have call predecessors, (217), 24 states have call successors, (217) [2023-12-16 17:45:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 324 transitions. [2023-12-16 17:45:52,141 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 324 transitions. Word has length 111 [2023-12-16 17:45:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:52,141 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 324 transitions. [2023-12-16 17:45:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 324 transitions. [2023-12-16 17:45:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 17:45:52,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:52,144 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:52,189 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 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:52,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:52,345 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash -849286803, now seen corresponding path program 3 times [2023-12-16 17:45:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086094806] [2023-12-16 17:45:52,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:52,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:52,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:52,349 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 (17)] Waiting until timeout for monitored process [2023-12-16 17:45:52,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 17:45:52,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:52,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 17:45:52,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 92 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-16 17:45:52,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-16 17:45:52,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086094806] [2023-12-16 17:45:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086094806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:52,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-16 17:45:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684596902] [2023-12-16 17:45:52,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:45:52,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:45:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:45:52,778 INFO L87 Difference]: Start difference. First operand 127 states and 324 transitions. Second operand has 14 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-16 17:45:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:53,001 INFO L93 Difference]: Finished difference Result 247 states and 785 transitions. [2023-12-16 17:45:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:45:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 97 [2023-12-16 17:45:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:53,003 INFO L225 Difference]: With dead ends: 247 [2023-12-16 17:45:53,003 INFO L226 Difference]: Without dead ends: 129 [2023-12-16 17:45:53,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:45:53,006 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:53,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-16 17:45:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2023-12-16 17:45:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 23 states have call successors, (23), 7 states have call predecessors, (23), 25 states have return successors, (174), 39 states have call predecessors, (174), 23 states have call successors, (174) [2023-12-16 17:45:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 274 transitions. [2023-12-16 17:45:53,022 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 274 transitions. Word has length 97 [2023-12-16 17:45:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:53,022 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 274 transitions. [2023-12-16 17:45:53,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-16 17:45:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 274 transitions. [2023-12-16 17:45:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 17:45:53,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:53,025 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:53,030 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:53,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:53,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:53,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1714529634, now seen corresponding path program 4 times [2023-12-16 17:45:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76012099] [2023-12-16 17:45:53,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:45:53,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:53,229 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:53,230 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 (18)] Waiting until timeout for monitored process [2023-12-16 17:45:53,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:45:53,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:53,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 17:45:53,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-16 17:45:53,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-16 17:45:54,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76012099] [2023-12-16 17:45:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76012099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:54,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2023-12-16 17:45:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384160068] [2023-12-16 17:45:54,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:54,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 17:45:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 17:45:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2023-12-16 17:45:54,214 INFO L87 Difference]: Start difference. First operand 117 states and 274 transitions. Second operand has 28 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-16 17:45:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:54,517 INFO L93 Difference]: Finished difference Result 178 states and 522 transitions. [2023-12-16 17:45:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 17:45:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) Word has length 98 [2023-12-16 17:45:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:54,521 INFO L225 Difference]: With dead ends: 178 [2023-12-16 17:45:54,521 INFO L226 Difference]: Without dead ends: 174 [2023-12-16 17:45:54,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2023-12-16 17:45:54,522 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1096 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:45:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-16 17:45:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2023-12-16 17:45:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 82 states have internal predecessors, (88), 27 states have call successors, (27), 7 states have call predecessors, (27), 31 states have return successors, (255), 48 states have call predecessors, (255), 27 states have call successors, (255) [2023-12-16 17:45:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 370 transitions. [2023-12-16 17:45:54,545 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 370 transitions. Word has length 98 [2023-12-16 17:45:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:54,547 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 370 transitions. [2023-12-16 17:45:54,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-16 17:45:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 370 transitions. [2023-12-16 17:45:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 17:45:54,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:54,550 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:54,556 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 (18)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:54,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:54,753 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:54,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash -985857346, now seen corresponding path program 5 times [2023-12-16 17:45:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:54,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119185207] [2023-12-16 17:45:54,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:45:54,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:54,755 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:54,756 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 (19)] Waiting until timeout for monitored process [2023-12-16 17:45:54,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-16 17:45:54,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:54,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:45:54,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 79 proven. 113 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-16 17:45:55,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 78 proven. 126 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 17:45:56,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119185207] [2023-12-16 17:45:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119185207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:56,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 25 [2023-12-16 17:45:56,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426752503] [2023-12-16 17:45:56,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:56,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 17:45:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 17:45:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:45:56,093 INFO L87 Difference]: Start difference. First operand 138 states and 370 transitions. Second operand has 25 states, 22 states have (on average 3.0) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) [2023-12-16 17:45:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:57,297 INFO L93 Difference]: Finished difference Result 331 states and 1214 transitions. [2023-12-16 17:45:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 17:45:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.0) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) Word has length 110 [2023-12-16 17:45:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:57,302 INFO L225 Difference]: With dead ends: 331 [2023-12-16 17:45:57,302 INFO L226 Difference]: Without dead ends: 190 [2023-12-16 17:45:57,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=1095, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:45:57,307 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:57,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 403 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:45:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-16 17:45:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 164. [2023-12-16 17:45:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 94 states have (on average 1.1170212765957446) internal successors, (105), 96 states have internal predecessors, (105), 35 states have call successors, (35), 11 states have call predecessors, (35), 34 states have return successors, (219), 56 states have call predecessors, (219), 35 states have call successors, (219) [2023-12-16 17:45:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 359 transitions. [2023-12-16 17:45:57,328 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 359 transitions. Word has length 110 [2023-12-16 17:45:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:57,328 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 359 transitions. [2023-12-16 17:45:57,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.0) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) [2023-12-16 17:45:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 359 transitions. [2023-12-16 17:45:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 17:45:57,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:57,332 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:57,336 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 (19)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:57,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:57,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash 342708316, now seen corresponding path program 6 times [2023-12-16 17:45:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122479473] [2023-12-16 17:45:57,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:45:57,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:57,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:57,537 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 (20)] Waiting until timeout for monitored process [2023-12-16 17:45:57,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-16 17:45:57,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:57,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:45:57,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-16 17:45:57,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 40 proven. 92 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-16 17:45:58,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122479473] [2023-12-16 17:45:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122479473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:58,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2023-12-16 17:45:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911155281] [2023-12-16 17:45:58,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:58,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:45:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:45:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:45:58,035 INFO L87 Difference]: Start difference. First operand 164 states and 359 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:58,253 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2023-12-16 17:45:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 17:45:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) Word has length 109 [2023-12-16 17:45:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:58,256 INFO L225 Difference]: With dead ends: 218 [2023-12-16 17:45:58,256 INFO L226 Difference]: Without dead ends: 204 [2023-12-16 17:45:58,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:45:58,258 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:58,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 90 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:45:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-16 17:45:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 161. [2023-12-16 17:45:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 94 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 33 states have return successors, (214), 55 states have call predecessors, (214), 35 states have call successors, (214) [2023-12-16 17:45:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 352 transitions. [2023-12-16 17:45:58,289 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 352 transitions. Word has length 109 [2023-12-16 17:45:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:58,289 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 352 transitions. [2023-12-16 17:45:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-16 17:45:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 352 transitions. [2023-12-16 17:45:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 17:45:58,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:58,292 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:58,299 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 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:58,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:58,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1850819850, now seen corresponding path program 7 times [2023-12-16 17:45:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079286125] [2023-12-16 17:45:58,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:45:58,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:58,593 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:58,624 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 (21)] Waiting until timeout for monitored process [2023-12-16 17:45:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:58,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:45:58,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 43 proven. 129 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-16 17:45:58,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 43 proven. 139 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-16 17:45:59,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079286125] [2023-12-16 17:45:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079286125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:59,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 15 [2023-12-16 17:45:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075954992] [2023-12-16 17:45:59,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:45:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:45:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:45:59,277 INFO L87 Difference]: Start difference. First operand 161 states and 352 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-16 17:45:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:59,491 INFO L93 Difference]: Finished difference Result 324 states and 737 transitions. [2023-12-16 17:45:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:45:59,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) Word has length 122 [2023-12-16 17:45:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:59,492 INFO L225 Difference]: With dead ends: 324 [2023-12-16 17:45:59,492 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 17:45:59,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:45:59,497 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:59,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 69 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:45:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 17:45:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 17:45:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:45:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 17:45:59,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2023-12-16 17:45:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:59,503 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 17:45:59,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-16 17:45:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 17:45:59,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 17:45:59,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:45:59,509 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 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:59,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 17:46:02,777 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| (_ bv5 32)) [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-12-16 17:46:02,778 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-12-16 17:46:02,779 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (= |fibo2_#in~n| fibo2_~n) (not (= |fibo2_#in~n| (_ bv1 32))) (not (bvslt fibo2_~n (_ bv1 32)))) [2023-12-16 17:46:02,779 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse1 (= |fibo2_#t~ret6| (_ bv1 32))) (.cse0 (= (_ bv4 32) |fibo2_#in~n|))) (or (and .cse0 (= (_ bv4 32) fibo2_~n) (= (_ bv2 32) |fibo2_#t~ret6|)) (and (= (_ bv3 32) |fibo2_#in~n|) (= (_ bv3 32) fibo2_~n) .cse1) (and (= (_ bv2 32) fibo2_~n) (= (_ bv2 32) |fibo2_#in~n|) .cse1) (and (not .cse0) (= |fibo2_#in~n| fibo2_~n) (not (bvslt (bvadd (_ bv4294967293 32) |fibo2_#in~n|) (_ bv1 32))) (not (bvslt fibo2_~n (_ bv1 32)))))) [2023-12-16 17:46:02,779 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-12-16 17:46:02,779 INFO L899 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2023-12-16 17:46:02,779 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-12-16 17:46:02,779 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-12-16 17:46:02,779 INFO L895 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (not (bvslt fibo1_~n (_ bv1 32))) (not (= (_ bv1 32) fibo1_~n)) (= |fibo1_#in~n| fibo1_~n)) [2023-12-16 17:46:02,779 INFO L895 garLoopResultBuilder]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse1 (= |fibo1_#in~n| (_ bv3 32))) (.cse2 (= |fibo1_#in~n| (_ bv5 32))) (.cse0 (= |fibo1_#t~ret4| (_ bv1 32))) (.cse3 (= |fibo1_#in~n| (_ bv2 32)))) (or (and (= (_ bv3 32) fibo1_~n) .cse0 .cse1) (and (= |fibo1_#t~ret4| (_ bv3 32)) (= (_ bv5 32) fibo1_~n) .cse2) (and (not .cse1) (not .cse2) (not (bvslt (bvadd |fibo1_#in~n| (_ bv4294967295 32)) (_ bv1 32))) (not (bvslt fibo1_~n (_ bv1 32))) (not .cse3) (= |fibo1_#in~n| fibo1_~n)) (and .cse0 .cse3 (= (_ bv2 32) fibo1_~n)))) [2023-12-16 17:46:02,779 INFO L899 garLoopResultBuilder]: For program point L15-2(line 15) no Hoare annotation was computed. [2023-12-16 17:46:02,780 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-12-16 17:46:02,780 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-12-16 17:46:02,780 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-12-16 17:46:02,780 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-12-16 17:46:02,780 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-12-16 17:46:02,782 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 2, 2, 1, 1, 1, 1] [2023-12-16 17:46:02,784 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:46:02,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:46:02 BoogieIcfgContainer [2023-12-16 17:46:02,787 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:46:02,788 INFO L158 Benchmark]: Toolchain (without parser) took 24877.23ms. Allocated memory was 213.9MB in the beginning and 526.4MB in the end (delta: 312.5MB). Free memory was 160.5MB in the beginning and 313.4MB in the end (delta: -152.9MB). Peak memory consumption was 244.6MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,788 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 213.9MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:46:02,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.64ms. Allocated memory is still 213.9MB. Free memory was 160.3MB in the beginning and 149.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.88ms. Allocated memory is still 213.9MB. Free memory was 149.0MB in the beginning and 147.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,788 INFO L158 Benchmark]: Boogie Preprocessor took 55.08ms. Allocated memory is still 213.9MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,789 INFO L158 Benchmark]: RCFGBuilder took 328.68ms. Allocated memory is still 213.9MB. Free memory was 145.8MB in the beginning and 134.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,789 INFO L158 Benchmark]: TraceAbstraction took 24238.28ms. Allocated memory was 213.9MB in the beginning and 526.4MB in the end (delta: 312.5MB). Free memory was 133.7MB in the beginning and 313.4MB in the end (delta: -179.7MB). Peak memory consumption was 218.4MB. Max. memory is 8.0GB. [2023-12-16 17:46:02,790 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 213.9MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.64ms. Allocated memory is still 213.9MB. Free memory was 160.3MB in the beginning and 149.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.88ms. Allocated memory is still 213.9MB. Free memory was 149.0MB in the beginning and 147.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.08ms. Allocated memory is still 213.9MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 328.68ms. Allocated memory is still 213.9MB. Free memory was 145.8MB in the beginning and 134.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 24238.28ms. Allocated memory was 213.9MB in the beginning and 526.4MB in the end (delta: 312.5MB). Free memory was 133.7MB in the beginning and 313.4MB in the end (delta: -179.7MB). Peak memory consumption was 218.4MB. 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 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 20, TraceHistogramMax: 12, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 596 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 488 mSDsluCounter, 3367 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2957 mSDsCounter, 284 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3870 IncrementalHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 284 mSolverCounterUnsat, 410 mSDtfsCounter, 3870 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2750 GetRequests, 2434 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=18, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 378 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 529 PreInvPairs, 1625 NumberOfFragments, 135 HoareAnnotationTreeSize, 529 FormulaSimplifications, 208210 FormulaSimplificationTreeSizeReduction, 2.2s HoareSimplificationTime, 7 FormulaSimplificationsInter, 8181 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1249 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2631 ConstructedInterpolants, 0 QuantifiedInterpolants, 6281 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1965 ConjunctsInSsa, 203 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 4770/6368 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-16 17:46:02,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...