/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/loop-simple/deep-nested.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:57:14,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:57:14,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:57:14,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:57:14,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:57:14,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:57:14,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:57:14,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:57:14,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:57:14,390 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:57:14,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:57:14,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:57:14,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:57:14,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:57:14,392 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:57:14,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:57:14,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:57:14,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:57:14,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:57:14,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:57:14,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:57:14,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:57:14,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:57:14,394 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:57:14,394 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:57:14,395 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:57:14,395 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:57:14,395 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:57:14,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:57:14,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:57:14,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:57:14,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:57:14,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:57:14,397 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:57:14,398 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:57:14,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:57:14,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:57:14,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:57:14,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:57:14,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:57:14,399 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:57:14,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:57:14,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:57:14,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:57:14,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:57:14,638 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:57:14,638 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:57:14,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/deep-nested.c [2023-12-24 23:57:15,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:57:15,934 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:57:15,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c [2023-12-24 23:57:15,941 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee20e93f/84dd7ad383bd4c3f9a78defda3f4e4d3/FLAGebd5a5394 [2023-12-24 23:57:15,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee20e93f/84dd7ad383bd4c3f9a78defda3f4e4d3 [2023-12-24 23:57:15,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:57:15,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:57:15,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:57:15,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:57:15,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:57:15,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:57:15" (1/1) ... [2023-12-24 23:57:15,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63004a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:15, skipping insertion in model container [2023-12-24 23:57:15,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:57:15" (1/1) ... [2023-12-24 23:57:15,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:57:16,143 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c[863,876] [2023-12-24 23:57:16,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:57:16,160 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:57:16,179 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c[863,876] [2023-12-24 23:57:16,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:57:16,198 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:57:16,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16 WrapperNode [2023-12-24 23:57:16,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:57:16,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:57:16,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:57:16,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:57:16,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,229 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-12-24 23:57:16,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:57:16,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:57:16,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:57:16,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:57:16,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,251 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]. [2023-12-24 23:57:16,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:57:16,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:57:16,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:57:16,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:57:16,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (1/1) ... [2023-12-24 23:57:16,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:57:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:57:16,293 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) [2023-12-24 23:57:16,317 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 [2023-12-24 23:57:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:57:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:57:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:57:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:57:16,389 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:57:16,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:57:16,538 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:57:16,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:57:16,561 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-24 23:57:16,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:57:16 BoogieIcfgContainer [2023-12-24 23:57:16,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:57:16,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:57:16,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:57:16,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:57:16,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:57:15" (1/3) ... [2023-12-24 23:57:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bb96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:57:16, skipping insertion in model container [2023-12-24 23:57:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:16" (2/3) ... [2023-12-24 23:57:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bb96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:57:16, skipping insertion in model container [2023-12-24 23:57:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:57:16" (3/3) ... [2023-12-24 23:57:16,568 INFO L112 eAbstractionObserver]: Analyzing ICFG deep-nested.c [2023-12-24 23:57:16,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:57:16,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:57:16,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:57:16,638 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;@23264bff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:57:16,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:57:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 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) [2023-12-24 23:57:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-24 23:57:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:16,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:16,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:16,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1672362000, now seen corresponding path program 1 times [2023-12-24 23:57:16,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616020952] [2023-12-24 23:57:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:16,668 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 [2023-12-24 23:57:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:16,674 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) [2023-12-24 23:57:16,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 23:57:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:16,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:57:16,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:16,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:16,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:16,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616020952] [2023-12-24 23:57:16,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616020952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:16,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:16,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:57:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313081895] [2023-12-24 23:57:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:16,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:16,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:16,854 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-24 23:57:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:16,947 INFO L93 Difference]: Finished difference Result 34 states and 57 transitions. [2023-12-24 23:57:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2023-12-24 23:57:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:16,956 INFO L225 Difference]: With dead ends: 34 [2023-12-24 23:57:16,956 INFO L226 Difference]: Without dead ends: 17 [2023-12-24 23:57:16,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:16,963 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:16,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:57:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-24 23:57:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-12-24 23:57:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2023-12-24 23:57:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-24 23:57:17,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2023-12-24 23:57:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:17,003 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-24 23:57:17,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-24 23:57:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-24 23:57:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 23:57:17,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:17,005 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:17,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 23:57:17,207 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 [2023-12-24 23:57:17,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:17,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 288176442, now seen corresponding path program 1 times [2023-12-24 23:57:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472104016] [2023-12-24 23:57:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:17,209 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 [2023-12-24 23:57:17,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:17,217 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) [2023-12-24 23:57:17,222 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 [2023-12-24 23:57:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:17,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:57:17,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:17,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:17,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472104016] [2023-12-24 23:57:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472104016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:17,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 23:57:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860475419] [2023-12-24 23:57:17,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:57:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:57:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:57:17,453 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-12-24 23:57:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:17,598 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2023-12-24 23:57:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:57:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 11 [2023-12-24 23:57:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:17,600 INFO L225 Difference]: With dead ends: 48 [2023-12-24 23:57:17,600 INFO L226 Difference]: Without dead ends: 33 [2023-12-24 23:57:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-24 23:57:17,601 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:17,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 31 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:57:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-24 23:57:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-12-24 23:57:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2023-12-24 23:57:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-24 23:57:17,609 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2023-12-24 23:57:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:17,610 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-24 23:57:17,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-12-24 23:57:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-24 23:57:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 23:57:17,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:17,611 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:17,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 23:57:17,813 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 [2023-12-24 23:57:17,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:17,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash -957350032, now seen corresponding path program 2 times [2023-12-24 23:57:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:17,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187979155] [2023-12-24 23:57:17,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:57:17,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:57:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:17,816 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) [2023-12-24 23:57:17,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 23:57:17,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:57:17,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:17,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:57:17,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:57:17,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:17,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187979155] [2023-12-24 23:57:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187979155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:17,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:57:17,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72323767] [2023-12-24 23:57:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:17,946 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-12-24 23:57:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:18,004 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-12-24 23:57:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:18,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 20 [2023-12-24 23:57:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:18,007 INFO L225 Difference]: With dead ends: 67 [2023-12-24 23:57:18,007 INFO L226 Difference]: Without dead ends: 43 [2023-12-24 23:57:18,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:18,011 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:18,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-24 23:57:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2023-12-24 23:57:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 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) [2023-12-24 23:57:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-12-24 23:57:18,027 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2023-12-24 23:57:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-12-24 23:57:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-12-24 23:57:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-24 23:57:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:57:18,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:18,028 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:18,034 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 [2023-12-24 23:57:18,230 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 [2023-12-24 23:57:18,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:18,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash -881695647, now seen corresponding path program 1 times [2023-12-24 23:57:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:18,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480743442] [2023-12-24 23:57:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:18,233 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 [2023-12-24 23:57:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:18,234 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) [2023-12-24 23:57:18,236 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 [2023-12-24 23:57:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:18,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:57:18,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:57:18,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:18,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480743442] [2023-12-24 23:57:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480743442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:18,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:57:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957029535] [2023-12-24 23:57:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:18,291 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-24 23:57:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:18,339 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2023-12-24 23:57:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:18,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 23 [2023-12-24 23:57:18,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:18,340 INFO L225 Difference]: With dead ends: 94 [2023-12-24 23:57:18,340 INFO L226 Difference]: Without dead ends: 60 [2023-12-24 23:57:18,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:18,342 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:18,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-24 23:57:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2023-12-24 23:57:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 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) [2023-12-24 23:57:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-12-24 23:57:18,356 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2023-12-24 23:57:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-12-24 23:57:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-24 23:57:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-12-24 23:57:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-24 23:57:18,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:18,358 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:18,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 23:57:18,560 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 [2023-12-24 23:57:18,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:18,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1448215077, now seen corresponding path program 1 times [2023-12-24 23:57:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424090588] [2023-12-24 23:57:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:18,562 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 [2023-12-24 23:57:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:18,565 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) [2023-12-24 23:57:18,566 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 [2023-12-24 23:57:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:18,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:57:18,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 23:57:18,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 23:57:18,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424090588] [2023-12-24 23:57:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424090588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:18,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-24 23:57:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543248285] [2023-12-24 23:57:18,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 23:57:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 23:57:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:57:18,823 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-12-24 23:57:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:19,037 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2023-12-24 23:57:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 23:57:19,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 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) Word has length 41 [2023-12-24 23:57:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:19,039 INFO L225 Difference]: With dead ends: 121 [2023-12-24 23:57:19,039 INFO L226 Difference]: Without dead ends: 78 [2023-12-24 23:57:19,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:57:19,040 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:19,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 35 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:57:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-24 23:57:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2023-12-24 23:57:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 72 states have internal predecessors, (80), 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) [2023-12-24 23:57:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2023-12-24 23:57:19,077 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 41 [2023-12-24 23:57:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:19,078 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2023-12-24 23:57:19,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-12-24 23:57:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2023-12-24 23:57:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-24 23:57:19,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:19,086 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:19,092 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 [2023-12-24 23:57:19,286 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 [2023-12-24 23:57:19,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:19,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1102159643, now seen corresponding path program 2 times [2023-12-24 23:57:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787230675] [2023-12-24 23:57:19,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:57:19,288 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 [2023-12-24 23:57:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:19,289 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) [2023-12-24 23:57:19,312 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 [2023-12-24 23:57:19,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:57:19,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:19,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:57:19,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-12-24 23:57:19,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:19,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787230675] [2023-12-24 23:57:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787230675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:57:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533687821] [2023-12-24 23:57:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:19,587 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-24 23:57:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:19,647 INFO L93 Difference]: Finished difference Result 213 states and 235 transitions. [2023-12-24 23:57:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 68 [2023-12-24 23:57:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:19,649 INFO L225 Difference]: With dead ends: 213 [2023-12-24 23:57:19,649 INFO L226 Difference]: Without dead ends: 141 [2023-12-24 23:57:19,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:19,650 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:19,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-24 23:57:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2023-12-24 23:57:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1122448979591837) internal successors, (109), 98 states have internal predecessors, (109), 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) [2023-12-24 23:57:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2023-12-24 23:57:19,680 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 68 [2023-12-24 23:57:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:19,681 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2023-12-24 23:57:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-24 23:57:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2023-12-24 23:57:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 23:57:19,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:19,687 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:19,692 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 [2023-12-24 23:57:19,890 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 [2023-12-24 23:57:19,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:19,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1092474702, now seen corresponding path program 1 times [2023-12-24 23:57:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:19,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333615907] [2023-12-24 23:57:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:19,891 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 [2023-12-24 23:57:19,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:19,892 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) [2023-12-24 23:57:19,897 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 [2023-12-24 23:57:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:19,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 23:57:19,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 359 proven. 51 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 23:57:20,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 359 proven. 51 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 23:57:20,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333615907] [2023-12-24 23:57:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333615907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:20,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:20,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 23:57:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107488953] [2023-12-24 23:57:20,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:20,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 23:57:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 23:57:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-24 23:57:20,545 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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) [2023-12-24 23:57:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:21,280 INFO L93 Difference]: Finished difference Result 297 states and 357 transitions. [2023-12-24 23:57:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 23:57:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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) Word has length 95 [2023-12-24 23:57:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:21,282 INFO L225 Difference]: With dead ends: 297 [2023-12-24 23:57:21,282 INFO L226 Difference]: Without dead ends: 199 [2023-12-24 23:57:21,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=444, Unknown=0, NotChecked=0, Total=702 [2023-12-24 23:57:21,283 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 138 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:21,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 44 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:57:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-24 23:57:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2023-12-24 23:57:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.056701030927835) internal successors, (205), 194 states have internal predecessors, (205), 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) [2023-12-24 23:57:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 205 transitions. [2023-12-24 23:57:21,312 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 205 transitions. Word has length 95 [2023-12-24 23:57:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:21,312 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 205 transitions. [2023-12-24 23:57:21,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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) [2023-12-24 23:57:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 205 transitions. [2023-12-24 23:57:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-24 23:57:21,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:21,314 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 55, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:21,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 23:57:21,519 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 [2023-12-24 23:57:21,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:21,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1616279374, now seen corresponding path program 2 times [2023-12-24 23:57:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766347598] [2023-12-24 23:57:21,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:57:21,521 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 [2023-12-24 23:57:21,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:21,522 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) [2023-12-24 23:57:21,523 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 [2023-12-24 23:57:21,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:57:21,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:21,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:57:21,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4762 trivial. 0 not checked. [2023-12-24 23:57:22,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:22,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766347598] [2023-12-24 23:57:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766347598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:57:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326459782] [2023-12-24 23:57:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:22,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:57:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:57:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:57:22,192 INFO L87 Difference]: Start difference. First operand 195 states and 205 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-24 23:57:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:22,272 INFO L93 Difference]: Finished difference Result 389 states and 409 transitions. [2023-12-24 23:57:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:57:22,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) Word has length 191 [2023-12-24 23:57:22,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:22,275 INFO L225 Difference]: With dead ends: 389 [2023-12-24 23:57:22,275 INFO L226 Difference]: Without dead ends: 387 [2023-12-24 23:57:22,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:57:22,276 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:22,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-24 23:57:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 248. [2023-12-24 23:57:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0607287449392713) internal successors, (262), 247 states have internal predecessors, (262), 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) [2023-12-24 23:57:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 262 transitions. [2023-12-24 23:57:22,310 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 262 transitions. Word has length 191 [2023-12-24 23:57:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:22,310 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 262 transitions. [2023-12-24 23:57:22,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-24 23:57:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 262 transitions. [2023-12-24 23:57:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-24 23:57:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:22,312 INFO L195 NwaCegarLoop]: trace histogram [70, 69, 69, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 23:57:22,319 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 [2023-12-24 23:57:22,514 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 [2023-12-24 23:57:22,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:22,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1131939450, now seen corresponding path program 1 times [2023-12-24 23:57:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96683282] [2023-12-24 23:57:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:22,516 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 [2023-12-24 23:57:22,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:22,518 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) [2023-12-24 23:57:22,520 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 [2023-12-24 23:57:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:22,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 23:57:22,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7522 backedges. 2455 proven. 287 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2023-12-24 23:57:23,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7522 backedges. 2455 proven. 287 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2023-12-24 23:57:24,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96683282] [2023-12-24 23:57:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96683282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:24,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:24,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 23:57:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688229084] [2023-12-24 23:57:24,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 23:57:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 23:57:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 23:57:24,118 INFO L87 Difference]: Start difference. First operand 248 states and 262 transitions. Second operand has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 33 states have internal predecessors, (113), 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) [2023-12-24 23:57:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:26,811 INFO L93 Difference]: Finished difference Result 735 states and 859 transitions. [2023-12-24 23:57:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-24 23:57:26,811 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 33 states have internal predecessors, (113), 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) Word has length 245 [2023-12-24 23:57:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:26,813 INFO L225 Difference]: With dead ends: 735 [2023-12-24 23:57:26,813 INFO L226 Difference]: Without dead ends: 490 [2023-12-24 23:57:26,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=898, Invalid=1652, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 23:57:26,816 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 237 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 26 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:57:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-24 23:57:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 488. [2023-12-24 23:57:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.0308008213552362) internal successors, (502), 487 states have internal predecessors, (502), 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) [2023-12-24 23:57:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 502 transitions. [2023-12-24 23:57:26,861 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 502 transitions. Word has length 245 [2023-12-24 23:57:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:26,862 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 502 transitions. [2023-12-24 23:57:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 33 states have internal predecessors, (113), 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) [2023-12-24 23:57:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 502 transitions. [2023-12-24 23:57:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-24 23:57:26,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:26,868 INFO L195 NwaCegarLoop]: trace histogram [150, 149, 149, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 23:57:26,881 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 [2023-12-24 23:57:27,076 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 [2023-12-24 23:57:27,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1159316602, now seen corresponding path program 2 times [2023-12-24 23:57:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553388491] [2023-12-24 23:57:27,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:57:27,078 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 [2023-12-24 23:57:27,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:27,079 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) [2023-12-24 23:57:27,080 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 [2023-12-24 23:57:27,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:57:27,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:27,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 23:57:27,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34042 backedges. 10999 proven. 1335 refuted. 0 times theorem prover too weak. 21708 trivial. 0 not checked. [2023-12-24 23:57:28,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34042 backedges. 10999 proven. 1335 refuted. 0 times theorem prover too weak. 21708 trivial. 0 not checked. [2023-12-24 23:57:31,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553388491] [2023-12-24 23:57:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553388491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:31,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2023-12-24 23:57:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986858112] [2023-12-24 23:57:31,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 23:57:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 23:57:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 23:57:31,533 INFO L87 Difference]: Start difference. First operand 488 states and 502 transitions. Second operand has 66 states, 66 states have (on average 3.1666666666666665) internal successors, (209), 65 states have internal predecessors, (209), 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) [2023-12-24 23:57:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:45,969 INFO L93 Difference]: Finished difference Result 1455 states and 1675 transitions. [2023-12-24 23:57:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-24 23:57:45,969 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.1666666666666665) internal successors, (209), 65 states have internal predecessors, (209), 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) Word has length 485 [2023-12-24 23:57:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:45,972 INFO L225 Difference]: With dead ends: 1455 [2023-12-24 23:57:45,972 INFO L226 Difference]: Without dead ends: 970 [2023-12-24 23:57:45,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 904 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=3330, Invalid=6372, Unknown=0, NotChecked=0, Total=9702 [2023-12-24 23:57:45,975 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 594 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:45,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 20 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 23:57:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-12-24 23:57:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 968. [2023-12-24 23:57:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.015511892450879) internal successors, (982), 967 states have internal predecessors, (982), 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) [2023-12-24 23:57:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 982 transitions. [2023-12-24 23:57:46,098 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 982 transitions. Word has length 485 [2023-12-24 23:57:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:46,098 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 982 transitions. [2023-12-24 23:57:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.1666666666666665) internal successors, (209), 65 states have internal predecessors, (209), 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) [2023-12-24 23:57:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 982 transitions. [2023-12-24 23:57:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2023-12-24 23:57:46,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:46,124 INFO L195 NwaCegarLoop]: trace histogram [310, 309, 309, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 23:57:46,139 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 [2023-12-24 23:57:46,338 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 [2023-12-24 23:57:46,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:46,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1013530746, now seen corresponding path program 3 times [2023-12-24 23:57:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:46,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081580939] [2023-12-24 23:57:46,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:57:46,341 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 [2023-12-24 23:57:46,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:46,342 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) [2023-12-24 23:57:46,343 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 [2023-12-24 23:57:46,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:57:46,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:46,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 23:57:46,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 144682 backedges. 0 proven. 46534 refuted. 0 times theorem prover too weak. 98148 trivial. 0 not checked. [2023-12-24 23:57:49,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 144682 backedges. 0 proven. 46534 refuted. 0 times theorem prover too weak. 98148 trivial. 0 not checked. [2023-12-24 23:57:51,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081580939] [2023-12-24 23:57:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081580939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:57:51,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:57:51,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 23:57:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451964527] [2023-12-24 23:57:51,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:57:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:57:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:57:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:57:51,181 INFO L87 Difference]: Start difference. First operand 968 states and 982 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-24 23:57:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:51,645 INFO L93 Difference]: Finished difference Result 3275 states and 3321 transitions. [2023-12-24 23:57:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 23:57:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) Word has length 965 [2023-12-24 23:57:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:51,656 INFO L225 Difference]: With dead ends: 3275 [2023-12-24 23:57:51,656 INFO L226 Difference]: Without dead ends: 3273 [2023-12-24 23:57:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1929 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:57:51,657 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:51,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:57:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-12-24 23:57:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 1562. [2023-12-24 23:57:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 1.017296604740551) internal successors, (1588), 1561 states have internal predecessors, (1588), 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) [2023-12-24 23:57:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 1588 transitions. [2023-12-24 23:57:51,875 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 1588 transitions. Word has length 965 [2023-12-24 23:57:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:51,877 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 1588 transitions. [2023-12-24 23:57:51,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-24 23:57:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 1588 transitions. [2023-12-24 23:57:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2023-12-24 23:57:51,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:51,909 INFO L195 NwaCegarLoop]: trace histogram [496, 495, 495, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1] [2023-12-24 23:57:51,912 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 [2023-12-24 23:57:52,109 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 [2023-12-24 23:57:52,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:52,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1531393534, now seen corresponding path program 4 times [2023-12-24 23:57:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374526638] [2023-12-24 23:57:52,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:57:52,112 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 [2023-12-24 23:57:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:52,113 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) [2023-12-24 23:57:52,114 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 [2023-12-24 23:57:52,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:57:52,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:57:53,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-24 23:57:53,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 371542 backedges. 81511 proven. 5735 refuted. 0 times theorem prover too weak. 284296 trivial. 0 not checked. [2023-12-24 23:57:55,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 371542 backedges. 81511 proven. 5735 refuted. 0 times theorem prover too weak. 284296 trivial. 0 not checked. [2023-12-24 23:58:07,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374526638] [2023-12-24 23:58:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374526638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:07,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2023-12-24 23:58:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612648393] [2023-12-24 23:58:07,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-24 23:58:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-24 23:58:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4353, Invalid=12417, Unknown=0, NotChecked=0, Total=16770 [2023-12-24 23:58:07,171 INFO L87 Difference]: Start difference. First operand 1562 states and 1588 transitions. Second operand has 130 states, 130 states have (on average 3.0846153846153848) internal successors, (401), 129 states have internal predecessors, (401), 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) [2023-12-24 23:59:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:51,484 INFO L93 Difference]: Finished difference Result 4659 states and 5287 transitions. [2023-12-24 23:59:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-24 23:59:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 3.0846153846153848) internal successors, (401), 129 states have internal predecessors, (401), 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) Word has length 1559 [2023-12-24 23:59:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:51,493 INFO L225 Difference]: With dead ends: 4659 [2023-12-24 23:59:51,494 INFO L226 Difference]: Without dead ends: 3100 [2023-12-24 23:59:51,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3181 GetRequests, 2988 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6174 ImplicationChecksByTransitivity, 111.2s TimeCoverageRelationStatistics Valid=12802, Invalid=25028, Unknown=0, NotChecked=0, Total=37830 [2023-12-24 23:59:51,502 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1001 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 12835 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 13022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 12835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:51,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 213 Invalid, 13022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 12835 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-24 23:59:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2023-12-24 23:59:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3098. [2023-12-24 23:59:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 1.0087181143041652) internal successors, (3124), 3097 states have internal predecessors, (3124), 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) [2023-12-24 23:59:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 3124 transitions. [2023-12-24 23:59:51,994 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 3124 transitions. Word has length 1559 [2023-12-24 23:59:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:51,994 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 3124 transitions. [2023-12-24 23:59:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 3.0846153846153848) internal successors, (401), 129 states have internal predecessors, (401), 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) [2023-12-24 23:59:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 3124 transitions. [2023-12-24 23:59:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3096 [2023-12-24 23:59:52,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:52,051 INFO L195 NwaCegarLoop]: trace histogram [1008, 1007, 1007, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1] [2023-12-24 23:59:52,082 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 [2023-12-24 23:59:52,251 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 [2023-12-24 23:59:52,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:52,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1565218302, now seen corresponding path program 5 times [2023-12-24 23:59:52,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:52,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595275599] [2023-12-24 23:59:52,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:59:52,256 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 [2023-12-24 23:59:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:52,257 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) [2023-12-24 23:59:52,263 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 [2023-12-24 23:59:54,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2023-12-24 23:59:54,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:54,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:59:54,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1528918 backedges. 632633 proven. 253 refuted. 0 times theorem prover too weak. 896032 trivial. 0 not checked. [2023-12-24 23:59:58,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:00:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1528918 backedges. 622343 proven. 10543 refuted. 0 times theorem prover too weak. 896032 trivial. 0 not checked. [2023-12-25 00:00:01,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595275599] [2023-12-25 00:00:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595275599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:00:01,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:00:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-25 00:00:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694306805] [2023-12-25 00:00:01,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:00:01,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 00:00:01,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 00:00:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-25 00:00:01,266 INFO L87 Difference]: Start difference. First operand 3098 states and 3124 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2023-12-25 00:00:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:03,377 INFO L93 Difference]: Finished difference Result 10082 states and 10165 transitions. [2023-12-25 00:00:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 00:00:03,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) Word has length 3095 [2023-12-25 00:00:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:03,400 INFO L225 Difference]: With dead ends: 10082 [2023-12-25 00:00:03,400 INFO L226 Difference]: Without dead ends: 7374 [2023-12-25 00:00:03,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6197 GetRequests, 6179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-25 00:00:03,406 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:03,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 41 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 00:00:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7374 states. [2023-12-25 00:00:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7374 to 4648. [2023-12-25 00:00:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4647 states have (on average 1.0083925112976113) internal successors, (4686), 4647 states have internal predecessors, (4686), 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) [2023-12-25 00:00:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 4686 transitions. [2023-12-25 00:00:05,065 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 4686 transitions. Word has length 3095 [2023-12-25 00:00:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:00:05,065 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 4686 transitions. [2023-12-25 00:00:05,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2023-12-25 00:00:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 4686 transitions. [2023-12-25 00:00:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4644 [2023-12-25 00:00:05,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:00:05,251 INFO L195 NwaCegarLoop]: trace histogram [1512, 1511, 1511, 12, 11, 11, 11, 10, 10, 10, 9, 9, 5, 4, 4, 1, 1, 1] [2023-12-25 00:00:05,266 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 [2023-12-25 00:00:05,463 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 [2023-12-25 00:00:05,464 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:00:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:00:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 634824818, now seen corresponding path program 6 times [2023-12-25 00:00:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:00:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385786835] [2023-12-25 00:00:05,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:00:05,470 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 [2023-12-25 00:00:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:00:05,472 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) [2023-12-25 00:00:05,497 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 [2023-12-25 00:00:06,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-25 00:00:06,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:00:06,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 00:00:06,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:00:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3442788 backedges. 955140 proven. 47629 refuted. 0 times theorem prover too weak. 2440019 trivial. 0 not checked. [2023-12-25 00:00:14,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:00:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3442788 backedges. 0 proven. 1002769 refuted. 0 times theorem prover too weak. 2440019 trivial. 0 not checked. [2023-12-25 00:00:22,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385786835] [2023-12-25 00:00:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385786835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:00:22,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:00:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-25 00:00:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224964619] [2023-12-25 00:00:22,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:00:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 00:00:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 00:00:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 00:00:22,111 INFO L87 Difference]: Start difference. First operand 4648 states and 4686 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-12-25 00:00:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:26,891 INFO L93 Difference]: Finished difference Result 25666 states and 25821 transitions. [2023-12-25 00:00:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 00:00:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) Word has length 4643 [2023-12-25 00:00:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:27,008 INFO L225 Difference]: With dead ends: 25666 [2023-12-25 00:00:27,008 INFO L226 Difference]: Without dead ends: 21022 [2023-12-25 00:00:27,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9287 GetRequests, 9278 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-25 00:00:27,033 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:27,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 00:00:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21022 states. [2023-12-25 00:00:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21022 to 9601. [2023-12-25 00:00:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9601 states, 9600 states have (on average 1.005625) internal successors, (9654), 9600 states have internal predecessors, (9654), 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) [2023-12-25 00:00:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9601 states to 9601 states and 9654 transitions. [2023-12-25 00:00:29,455 INFO L78 Accepts]: Start accepts. Automaton has 9601 states and 9654 transitions. Word has length 4643 [2023-12-25 00:00:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:00:29,457 INFO L495 AbstractCegarLoop]: Abstraction has 9601 states and 9654 transitions. [2023-12-25 00:00:29,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-12-25 00:00:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9601 states and 9654 transitions. [2023-12-25 00:00:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9597 [2023-12-25 00:00:30,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:00:30,038 INFO L195 NwaCegarLoop]: trace histogram [3150, 3149, 3149, 25, 24, 24, 11, 10, 10, 10, 9, 9, 5, 4, 4, 1, 1, 1] [2023-12-25 00:00:30,044 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 [2023-12-25 00:00:30,241 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 [2023-12-25 00:00:30,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:00:30,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:00:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1002272627, now seen corresponding path program 7 times [2023-12-25 00:00:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:00:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012209255] [2023-12-25 00:00:30,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:00:30,257 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 [2023-12-25 00:00:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:00:30,269 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) [2023-12-25 00:00:30,292 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 [2023-12-25 00:00:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:00:38,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 9664 conjuncts, 129 conjunts are in the unsatisfiable core [2023-12-25 00:00:39,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:00:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14953001 backedges. 1148961 proven. 23751 refuted. 0 times theorem prover too weak. 13780289 trivial. 0 not checked. [2023-12-25 00:00:51,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:01:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14953001 backedges. 1148961 proven. 23751 refuted. 0 times theorem prover too weak. 13780289 trivial. 0 not checked. [2023-12-25 00:01:52,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:01:52,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012209255] [2023-12-25 00:01:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012209255] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:01:52,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:01:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 257 [2023-12-25 00:01:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523033516] [2023-12-25 00:01:52,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:01:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2023-12-25 00:01:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:01:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2023-12-25 00:01:52,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16897, Invalid=49409, Unknown=0, NotChecked=0, Total=66306 [2023-12-25 00:01:52,953 INFO L87 Difference]: Start difference. First operand 9601 states and 9654 transitions. Second operand has 258 states, 258 states have (on average 3.0426356589147288) internal successors, (785), 257 states have internal predecessors, (785), 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) Received shutdown request... [2023-12-25 00:11:44,705 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 00:11:44,734 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 00:11:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-25 00:11:44,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19227 GetRequests, 18934 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17049 ImplicationChecksByTransitivity, 622.7s TimeCoverageRelationStatistics Valid=26185, Invalid=59957, Unknown=0, NotChecked=0, Total=86142 [2023-12-25 00:11:44,759 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 292 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:11:44,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 0 Invalid, 49134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 49133 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2023-12-25 00:11:44,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:11:45,001 WARN L435 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)] Forcibly destroying the process [2023-12-25 00:11:45,099 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 137 [2023-12-25 00:11:45,100 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 [2023-12-25 00:11:45,100 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (9601states) and FLOYD_HOARE automaton (currently 166 states, 258 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 294 known predicates. [2023-12-25 00:11:45,104 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 2, 2, 1, 1] [2023-12-25 00:11:45,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:11:45,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:11:45 BoogieIcfgContainer [2023-12-25 00:11:45,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:11:45,130 INFO L158 Benchmark]: Toolchain (without parser) took 869165.92ms. Allocated memory was 239.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 192.6MB in the beginning and 1.1GB in the end (delta: -879.5MB). Peak memory consumption was 855.8MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,131 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:11:45,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.28ms. Allocated memory is still 239.1MB. Free memory was 192.6MB in the beginning and 181.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.63ms. Allocated memory is still 239.1MB. Free memory was 181.4MB in the beginning and 180.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,132 INFO L158 Benchmark]: Boogie Preprocessor took 32.39ms. Allocated memory is still 239.1MB. Free memory was 180.0MB in the beginning and 177.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,132 INFO L158 Benchmark]: RCFGBuilder took 298.04ms. Allocated memory is still 239.1MB. Free memory was 177.9MB in the beginning and 164.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,132 INFO L158 Benchmark]: TraceAbstraction took 868564.74ms. Allocated memory was 239.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 164.2MB in the beginning and 1.1GB in the end (delta: -907.8MB). Peak memory consumption was 827.5MB. Max. memory is 8.0GB. [2023-12-25 00:11:45,137 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.28ms. Allocated memory is still 239.1MB. Free memory was 192.6MB in the beginning and 181.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.63ms. Allocated memory is still 239.1MB. Free memory was 181.4MB in the beginning and 180.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.39ms. Allocated memory is still 239.1MB. Free memory was 180.0MB in the beginning and 177.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 298.04ms. Allocated memory is still 239.1MB. Free memory was 177.9MB in the beginning and 164.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 868564.74ms. Allocated memory was 239.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 164.2MB in the beginning and 1.1GB in the end (delta: -907.8MB). Peak memory consumption was 827.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 23). Cancelled while NwaCegarLoop was constructing difference of abstraction (9601states) and FLOYD_HOARE automaton (currently 166 states, 258 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 294 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.5s, OverallIterations: 15, TraceHistogramMax: 3150, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.9s, AutomataDifference: 722.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2537 SdHoareTripleChecker+Valid, 31.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2537 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 26.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 420 mSDsCounter, 371 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66965 IncrementalHoareTripleChecker+Invalid, 67336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 371 mSolverCounterUnsat, 85 mSDtfsCounter, 66965 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41936 GetRequests, 41217 SyntacticMatches, 0 SemanticMatches, 718 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25374 ImplicationChecksByTransitivity, 755.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9601occurred in iteration=14, InterpolantAutomatonStates: 318, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 16087 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 9.3s SatisfiabilityAnalysisTime, 125.1s InterpolantComputationTime, 21045 NumberOfCodeBlocks, 12529 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 41755 ConstructedInterpolants, 385 QuantifiedInterpolants, 113025 SizeOfPredicates, 10 NumberOfNonLiveVariables, 12937 ConjunctsInSsa, 305 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 39755769/40972363 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown