/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/nested_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:58:27,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:58:27,965 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 23:58:27,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:58:27,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:58:27,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:58:27,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:58:27,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:58:27,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:58:27,983 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:58:27,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:58:27,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:58:27,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:58:27,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:58:27,990 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:58:27,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:58:27,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:58:27,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:58:27,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:58:27,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:58:27,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:58:27,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:58:27,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:58:27,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:58:27,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:58:27,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:58:27,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:58:27,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:58:27,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:58:27,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:58:27,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:58:27,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:58:27,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:58:27,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:58:27,997 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:58:27,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:58:28,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:58:28,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:58:28,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:58:28,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:58:28,188 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:58:28,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_5.c [2023-12-24 23:58:29,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:58:29,274 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:58:29,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_5.c [2023-12-24 23:58:29,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d89596f9/a67b367624c641cc888925b27a0466df/FLAG8a2b567a0 [2023-12-24 23:58:29,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d89596f9/a67b367624c641cc888925b27a0466df [2023-12-24 23:58:29,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:58:29,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:58:29,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:58:29,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:58:29,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:58:29,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a278d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29, skipping insertion in model container [2023-12-24 23:58:29,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,309 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:58:29,409 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/nested_5.c[899,912] [2023-12-24 23:58:29,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:58:29,420 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:58:29,430 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/nested_5.c[899,912] [2023-12-24 23:58:29,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:58:29,440 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:58:29,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29 WrapperNode [2023-12-24 23:58:29,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:58:29,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:58:29,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:58:29,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:58:29,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,465 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-12-24 23:58:29,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:58:29,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:58:29,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:58:29,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:58:29,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,485 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 23:58:29,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:58:29,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:58:29,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:58:29,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:58:29,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (1/1) ... [2023-12-24 23:58:29,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:58:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:58:29,526 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 23:58:29,549 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 23:58:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:58:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:58:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:58:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:58:29,605 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:58:29,608 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:58:29,761 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:58:29,783 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:58:29,783 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-24 23:58:29,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:58:29 BoogieIcfgContainer [2023-12-24 23:58:29,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:58:29,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:58:29,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:58:29,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:58:29,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:58:29" (1/3) ... [2023-12-24 23:58:29,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae54d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:58:29, skipping insertion in model container [2023-12-24 23:58:29,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:58:29" (2/3) ... [2023-12-24 23:58:29,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae54d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:58:29, skipping insertion in model container [2023-12-24 23:58:29,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:58:29" (3/3) ... [2023-12-24 23:58:29,789 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_5.c [2023-12-24 23:58:29,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:58:29,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:58:29,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:58:29,832 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;@6809e741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:58:29,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:58:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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 23:58:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-24 23:58:29,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:29,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-24 23:58:29,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash 3257020, now seen corresponding path program 1 times [2023-12-24 23:58:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493162383] [2023-12-24 23:58:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:29,849 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 23:58:29,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:29,850 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 23:58:29,851 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 23:58:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:29,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:58:29,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:29,912 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 23:58:29,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:58:29,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493162383] [2023-12-24 23:58:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493162383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:58:29,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:58:29,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:58:29,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18075341] [2023-12-24 23:58:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:58:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:58:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:58:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:58:29,936 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 23:58:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:29,976 INFO L93 Difference]: Finished difference Result 38 states and 68 transitions. [2023-12-24 23:58:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:58:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-12-24 23:58:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:29,983 INFO L225 Difference]: With dead ends: 38 [2023-12-24 23:58:29,983 INFO L226 Difference]: Without dead ends: 22 [2023-12-24 23:58:29,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:58:29,987 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:29,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-24 23:58:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2023-12-24 23:58:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 23:58:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-12-24 23:58:30,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 4 [2023-12-24 23:58:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:30,009 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-12-24 23:58:30,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 23:58:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2023-12-24 23:58:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 23:58:30,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:30,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:30,011 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 23:58:30,210 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 23:58:30,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:30,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1743481472, now seen corresponding path program 1 times [2023-12-24 23:58:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:30,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546432656] [2023-12-24 23:58:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:30,212 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 23:58:30,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:30,213 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 23:58:30,214 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 23:58:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:30,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:58:30,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:30,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:58:30,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546432656] [2023-12-24 23:58:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546432656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:58:30,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:58:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:58:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468174233] [2023-12-24 23:58:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:58:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:58:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:58:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:58:30,241 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 23:58:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:30,261 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2023-12-24 23:58:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:58:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-24 23:58:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:30,262 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:58:30,262 INFO L226 Difference]: Without dead ends: 21 [2023-12-24 23:58:30,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:58:30,263 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:30,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-24 23:58:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-12-24 23:58:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 23:58:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-24 23:58:30,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2023-12-24 23:58:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:30,267 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-24 23:58:30,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 23:58:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-24 23:58:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 23:58:30,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:30,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:30,275 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 23:58:30,468 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 23:58:30,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:30,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1911061864, now seen corresponding path program 1 times [2023-12-24 23:58:30,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964665174] [2023-12-24 23:58:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:30,470 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 [2023-12-24 23:58:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:30,471 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 23:58:30,473 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 23:58:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:30,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:58:30,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:30,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:58:30,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964665174] [2023-12-24 23:58:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964665174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:58:30,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:58:30,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:58:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742767810] [2023-12-24 23:58:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:58:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:58:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:58:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:58:30,501 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) 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 23:58:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:30,514 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-24 23:58:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:58:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 10 [2023-12-24 23:58:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:30,515 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:58:30,515 INFO L226 Difference]: Without dead ends: 20 [2023-12-24 23:58:30,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 23:58:30,516 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:30,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-24 23:58:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2023-12-24 23:58:30,519 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 23:58:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-24 23:58:30,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-24 23:58:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:30,520 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-24 23:58:30,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 23:58:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-24 23:58:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-24 23:58:30,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:30,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:30,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:30,722 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 23:58:30,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:30,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 447814724, now seen corresponding path program 1 times [2023-12-24 23:58:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13587897] [2023-12-24 23:58:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:30,724 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 23:58:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:30,725 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 23:58:30,727 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 23:58:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:30,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:58:30,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:30,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:58:30,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13587897] [2023-12-24 23:58:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13587897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:58:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:58:30,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:58:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005894164] [2023-12-24 23:58:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:58:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:58:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:58:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:58:30,756 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) 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 23:58:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:30,772 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2023-12-24 23:58:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:58:30,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) 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 13 [2023-12-24 23:58:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:30,773 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:58:30,773 INFO L226 Difference]: Without dead ends: 19 [2023-12-24 23:58:30,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 23:58:30,774 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:30,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-24 23:58:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-12-24 23:58:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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 23:58:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-24 23:58:30,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 13 [2023-12-24 23:58:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:30,777 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-24 23:58:30,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) 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 23:58:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-24 23:58:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 23:58:30,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:30,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:30,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:30,984 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 23:58:30,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:30,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1206230460, now seen corresponding path program 1 times [2023-12-24 23:58:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:30,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887472749] [2023-12-24 23:58:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:30,985 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 23:58:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:30,989 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 23:58:31,000 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 23:58:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:31,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:58:31,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:31,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:58:31,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:31,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887472749] [2023-12-24 23:58:31,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887472749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:58:31,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:58:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:58:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877946549] [2023-12-24 23:58:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:58:31,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:58:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:58:31,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:58:31,039 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 23:58:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:31,047 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-12-24 23:58:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:58:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 16 [2023-12-24 23:58:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:31,048 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:58:31,048 INFO L226 Difference]: Without dead ends: 18 [2023-12-24 23:58:31,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 23:58:31,049 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:31,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-24 23:58:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-24 23:58:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 23:58:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-24 23:58:31,052 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 16 [2023-12-24 23:58:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:31,053 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-24 23:58:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 23:58:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-24 23:58:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-24 23:58:31,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:31,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:31,058 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 23:58:31,255 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 23:58:31,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1779175442, now seen corresponding path program 1 times [2023-12-24 23:58:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173792408] [2023-12-24 23:58:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:58:31,256 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 23:58:31,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:31,257 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 23:58:31,259 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 23:58:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:31,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:58:31,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:31,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:31,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173792408] [2023-12-24 23:58:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173792408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:31,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-24 23:58:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76721439] [2023-12-24 23:58:31,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:31,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:58:31,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:58:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:58:31,332 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 23:58:31,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:31,371 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-12-24 23:58:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:58:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) Word has length 17 [2023-12-24 23:58:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:31,372 INFO L225 Difference]: With dead ends: 37 [2023-12-24 23:58:31,372 INFO L226 Difference]: Without dead ends: 21 [2023-12-24 23:58:31,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 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 23:58:31,373 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:31,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-24 23:58:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-24 23:58:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 23:58:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-24 23:58:31,376 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2023-12-24 23:58:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:31,376 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-24 23:58:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 23:58:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-24 23:58:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 23:58:31,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:31,377 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:31,381 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 23:58:31,577 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 23:58:31,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:31,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2113824196, now seen corresponding path program 2 times [2023-12-24 23:58:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322784785] [2023-12-24 23:58:31,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:58:31,579 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 23:58:31,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:31,580 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 23:58:31,582 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 23:58:31,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:58:31,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:31,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:58:31,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:31,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:58:31,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322784785] [2023-12-24 23:58:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322784785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:31,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:58:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419798779] [2023-12-24 23:58:31,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:58:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:58:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:31,739 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 23:58:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:31,781 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-24 23:58:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:58:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) Word has length 20 [2023-12-24 23:58:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:31,784 INFO L225 Difference]: With dead ends: 42 [2023-12-24 23:58:31,784 INFO L226 Difference]: Without dead ends: 23 [2023-12-24 23:58:31,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:31,786 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:31,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-24 23:58:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-24 23:58:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 23:58:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-24 23:58:31,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 20 [2023-12-24 23:58:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:31,795 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-24 23:58:31,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 23:58:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-24 23:58:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 23:58:31,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:31,796 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:58:31,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:32,004 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 23:58:32,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:32,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash -750698620, now seen corresponding path program 3 times [2023-12-24 23:58:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235442129] [2023-12-24 23:58:32,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:58:32,005 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 23:58:32,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:32,006 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 23:58:32,007 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 23:58:32,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:58:32,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:32,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:58:32,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 23:58:32,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 23:58:32,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235442129] [2023-12-24 23:58:32,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235442129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:32,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:32,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 23:58:32,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585966354] [2023-12-24 23:58:32,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:58:32,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:58:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:58:32,120 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:58:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:32,172 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2023-12-24 23:58:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:58:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 22 [2023-12-24 23:58:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:32,174 INFO L225 Difference]: With dead ends: 80 [2023-12-24 23:58:32,174 INFO L226 Difference]: Without dead ends: 77 [2023-12-24 23:58:32,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 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 23:58:32,178 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:32,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 57 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-24 23:58:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-24 23:58:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 76 states have internal predecessors, (93), 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 23:58:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2023-12-24 23:58:32,190 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 22 [2023-12-24 23:58:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:32,191 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2023-12-24 23:58:32,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:58:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2023-12-24 23:58:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-24 23:58:32,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:32,192 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:32,198 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 23:58:32,398 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 23:58:32,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:32,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1338644956, now seen corresponding path program 4 times [2023-12-24 23:58:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891407176] [2023-12-24 23:58:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:58:32,399 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 23:58:32,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:32,400 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 23:58:32,409 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 23:58:32,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:58:32,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:58:32,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-24 23:58:32,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-24 23:58:32,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891407176] [2023-12-24 23:58:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891407176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:32,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-24 23:58:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316897280] [2023-12-24 23:58:32,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:58:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:58:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:58:32,499 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 23:58:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:32,545 INFO L93 Difference]: Finished difference Result 259 states and 315 transitions. [2023-12-24 23:58:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:58:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) Word has length 76 [2023-12-24 23:58:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:32,546 INFO L225 Difference]: With dead ends: 259 [2023-12-24 23:58:32,546 INFO L226 Difference]: Without dead ends: 185 [2023-12-24 23:58:32,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 23:58:32,547 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-24 23:58:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-12-24 23:58:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.1576086956521738) internal successors, (213), 184 states have internal predecessors, (213), 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 23:58:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2023-12-24 23:58:32,581 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 76 [2023-12-24 23:58:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:32,582 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2023-12-24 23:58:32,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 23:58:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2023-12-24 23:58:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-24 23:58:32,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:32,584 INFO L195 NwaCegarLoop]: trace histogram [96, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:32,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 23:58:32,786 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 23:58:32,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1429679292, now seen corresponding path program 5 times [2023-12-24 23:58:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069287242] [2023-12-24 23:58:32,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:58:32,788 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 23:58:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:32,789 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 23:58:32,790 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 23:58:32,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-24 23:58:32,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:32,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:58:32,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6610 backedges. 4170 proven. 310 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2023-12-24 23:58:32,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6610 backedges. 4170 proven. 310 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2023-12-24 23:58:33,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069287242] [2023-12-24 23:58:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069287242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:33,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:58:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449548421] [2023-12-24 23:58:33,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:58:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:58:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:33,069 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 23:58:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:33,175 INFO L93 Difference]: Finished difference Result 439 states and 511 transitions. [2023-12-24 23:58:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:58:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 184 [2023-12-24 23:58:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:33,176 INFO L225 Difference]: With dead ends: 439 [2023-12-24 23:58:33,176 INFO L226 Difference]: Without dead ends: 257 [2023-12-24 23:58:33,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:33,179 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:33,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:58:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-24 23:58:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-12-24 23:58:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.14453125) internal successors, (293), 256 states have internal predecessors, (293), 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 23:58:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 293 transitions. [2023-12-24 23:58:33,215 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 293 transitions. Word has length 184 [2023-12-24 23:58:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 293 transitions. [2023-12-24 23:58:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 23:58:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 293 transitions. [2023-12-24 23:58:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-24 23:58:33,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:33,221 INFO L195 NwaCegarLoop]: trace histogram [144, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:33,223 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 23:58:33,423 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 23:58:33,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:33,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash -51031876, now seen corresponding path program 6 times [2023-12-24 23:58:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123312741] [2023-12-24 23:58:33,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:58:33,425 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 23:58:33,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:33,426 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 23:58:33,430 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 23:58:33,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-12-24 23:58:33,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:33,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:58:33,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14766 backedges. 5581 proven. 1 refuted. 0 times theorem prover too weak. 9184 trivial. 0 not checked. [2023-12-24 23:58:33,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14766 backedges. 5581 proven. 1 refuted. 0 times theorem prover too weak. 9184 trivial. 0 not checked. [2023-12-24 23:58:33,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:33,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123312741] [2023-12-24 23:58:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123312741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:33,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-24 23:58:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509177874] [2023-12-24 23:58:33,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:58:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:58:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:58:33,865 INFO L87 Difference]: Start difference. First operand 257 states and 293 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 23:58:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:34,013 INFO L93 Difference]: Finished difference Result 1171 states and 1342 transitions. [2023-12-24 23:58:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:58:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 256 [2023-12-24 23:58:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:34,016 INFO L225 Difference]: With dead ends: 1171 [2023-12-24 23:58:34,016 INFO L226 Difference]: Without dead ends: 977 [2023-12-24 23:58:34,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 506 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 23:58:34,017 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:34,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 47 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-24 23:58:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2023-12-24 23:58:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.1362704918032787) internal successors, (1109), 976 states have internal predecessors, (1109), 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 23:58:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1109 transitions. [2023-12-24 23:58:34,106 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1109 transitions. Word has length 256 [2023-12-24 23:58:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:34,106 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1109 transitions. [2023-12-24 23:58:34,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 23:58:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1109 transitions. [2023-12-24 23:58:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2023-12-24 23:58:34,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:34,120 INFO L195 NwaCegarLoop]: trace histogram [576, 96, 96, 96, 16, 16, 16, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:34,126 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 23:58:34,324 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 23:58:34,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:34,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 199115196, now seen corresponding path program 7 times [2023-12-24 23:58:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108169724] [2023-12-24 23:58:34,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:58:34,326 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 23:58:34,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:34,327 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 23:58:34,331 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 23:58:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:58:34,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:58:34,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 237174 backedges. 27833 proven. 1 refuted. 0 times theorem prover too weak. 209340 trivial. 0 not checked. [2023-12-24 23:58:34,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 237174 backedges. 27833 proven. 1 refuted. 0 times theorem prover too weak. 209340 trivial. 0 not checked. [2023-12-24 23:58:35,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108169724] [2023-12-24 23:58:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108169724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:35,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-24 23:58:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975213921] [2023-12-24 23:58:35,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:35,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:58:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:58:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:58:35,113 INFO L87 Difference]: Start difference. First operand 977 states and 1109 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 23:58:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:35,512 INFO L93 Difference]: Finished difference Result 4629 states and 5269 transitions. [2023-12-24 23:58:35,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:58:35,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 976 [2023-12-24 23:58:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:35,522 INFO L225 Difference]: With dead ends: 4629 [2023-12-24 23:58:35,522 INFO L226 Difference]: Without dead ends: 3713 [2023-12-24 23:58:35,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1951 GetRequests, 1946 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 23:58:35,524 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:35,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2023-12-24 23:58:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2023-12-24 23:58:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3712 states have (on average 1.1263469827586208) internal successors, (4181), 3712 states have internal predecessors, (4181), 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 23:58:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4181 transitions. [2023-12-24 23:58:35,840 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4181 transitions. Word has length 976 [2023-12-24 23:58:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:35,840 INFO L495 AbstractCegarLoop]: Abstraction has 3713 states and 4181 transitions. [2023-12-24 23:58:35,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 23:58:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4181 transitions. [2023-12-24 23:58:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3713 [2023-12-24 23:58:35,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:35,967 INFO L195 NwaCegarLoop]: trace histogram [2304, 384, 384, 384, 64, 64, 64, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:35,982 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 23:58:36,172 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 23:58:36,173 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:36,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -376380996, now seen corresponding path program 8 times [2023-12-24 23:58:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245011182] [2023-12-24 23:58:36,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:58:36,177 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 23:58:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:36,177 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 23:58:36,200 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 23:58:39,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:58:39,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:58:39,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 6500 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:58:39,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:58:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3790494 backedges. 444398 proven. 11110 refuted. 0 times theorem prover too weak. 3334986 trivial. 0 not checked. [2023-12-24 23:58:40,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:58:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3790494 backedges. 444398 proven. 11110 refuted. 0 times theorem prover too weak. 3334986 trivial. 0 not checked. [2023-12-24 23:58:40,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:58:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245011182] [2023-12-24 23:58:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245011182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:58:40,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:58:40,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:58:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053020629] [2023-12-24 23:58:40,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:58:40,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:58:40,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:58:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:58:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:40,678 INFO L87 Difference]: Start difference. First operand 3713 states and 4181 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 23:58:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:58:41,152 INFO L93 Difference]: Finished difference Result 9018 states and 10181 transitions. [2023-12-24 23:58:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 23:58:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 3712 [2023-12-24 23:58:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:58:41,166 INFO L225 Difference]: With dead ends: 9018 [2023-12-24 23:58:41,166 INFO L226 Difference]: Without dead ends: 5537 [2023-12-24 23:58:41,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7422 GetRequests, 7412 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:58:41,172 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:58:41,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 141 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:58:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2023-12-24 23:58:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 5537. [2023-12-24 23:58:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 5536 states have (on average 1.1251806358381502) internal successors, (6229), 5536 states have internal predecessors, (6229), 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 23:58:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 6229 transitions. [2023-12-24 23:58:41,601 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 6229 transitions. Word has length 3712 [2023-12-24 23:58:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:58:41,602 INFO L495 AbstractCegarLoop]: Abstraction has 5537 states and 6229 transitions. [2023-12-24 23:58:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 23:58:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 6229 transitions. [2023-12-24 23:58:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5537 [2023-12-24 23:58:41,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:58:41,804 INFO L195 NwaCegarLoop]: trace histogram [3456, 576, 576, 576, 96, 96, 96, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:58:41,864 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 [2023-12-24 23:58:42,005 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 [2023-12-24 23:58:42,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:58:42,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:58:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1681479236, now seen corresponding path program 9 times [2023-12-24 23:58:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:58:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881049483] [2023-12-24 23:58:42,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:58:42,010 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 23:58:42,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:58:42,011 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) [2023-12-24 23:58:42,013 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 [2023-12-24 23:59:23,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 348 check-sat command(s) [2023-12-24 23:59:23,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:59:24,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:59:24,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:59:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8528654 backedges. 3199282 proven. 399910 refuted. 0 times theorem prover too weak. 4929462 trivial. 0 not checked. [2023-12-24 23:59:25,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:59:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8528654 backedges. 3199282 proven. 399910 refuted. 0 times theorem prover too weak. 4929462 trivial. 0 not checked. [2023-12-24 23:59:30,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:59:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881049483] [2023-12-24 23:59:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881049483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:59:30,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:59:30,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-24 23:59:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407537783] [2023-12-24 23:59:30,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:59:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 23:59:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:59:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 23:59:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-24 23:59:30,241 INFO L87 Difference]: Start difference. First operand 5537 states and 6229 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 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 23:59:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:59:31,466 INFO L93 Difference]: Finished difference Result 17971 states and 20238 transitions. [2023-12-24 23:59:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 23:59:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 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 5536 [2023-12-24 23:59:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:59:31,504 INFO L225 Difference]: With dead ends: 17971 [2023-12-24 23:59:31,504 INFO L226 Difference]: Without dead ends: 13817 [2023-12-24 23:59:31,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11077 GetRequests, 11060 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-12-24 23:59:31,513 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 81 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 181 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:59:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13817 states. [2023-12-24 23:59:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13817 to 13817. [2023-12-24 23:59:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13817 states, 13816 states have (on average 1.1251447596989) internal successors, (15545), 13816 states have internal predecessors, (15545), 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 23:59:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13817 states to 13817 states and 15545 transitions. [2023-12-24 23:59:32,747 INFO L78 Accepts]: Start accepts. Automaton has 13817 states and 15545 transitions. Word has length 5536 [2023-12-24 23:59:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:59:32,749 INFO L495 AbstractCegarLoop]: Abstraction has 13817 states and 15545 transitions. [2023-12-24 23:59:32,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 13 states have internal predecessors, (102), 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 23:59:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13817 states and 15545 transitions. [2023-12-24 23:59:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8297 [2023-12-24 23:59:33,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:59:33,189 INFO L195 NwaCegarLoop]: trace histogram [5184, 864, 864, 864, 144, 144, 144, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1] [2023-12-24 23:59:33,223 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 [2023-12-24 23:59:33,396 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 [2023-12-24 23:59:33,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:59:33,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:59:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 679025596, now seen corresponding path program 10 times [2023-12-24 23:59:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:59:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198077405] [2023-12-24 23:59:33,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:59:33,403 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 23:59:33,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:59:33,404 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) [2023-12-24 23:59:33,407 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 Received shutdown request... [2023-12-25 00:13:12,662 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 00:13:12,662 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 00:13:13,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 00:13:13,864 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 00:13:13,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 00:13:13,956 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:13:13,959 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 00:13:13,959 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 00:13:13,959 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 8297 with TraceHistMax 5184,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [198077405] and IpTcStrategyModuleCvc4 [421389522]. [2023-12-25 00:13:13,963 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1, 1] [2023-12-25 00:13:13,965 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:13:13,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:13:13 BoogieIcfgContainer [2023-12-25 00:13:13,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:13:13,967 INFO L158 Benchmark]: Toolchain (without parser) took 884676.47ms. Allocated memory was 295.7MB in the beginning and 1.0GB in the end (delta: 724.6MB). Free memory was 251.1MB in the beginning and 692.1MB in the end (delta: -441.0MB). Peak memory consumption was 283.0MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,967 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 183.5MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:13:13,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.36ms. Allocated memory is still 295.7MB. Free memory was 251.1MB in the beginning and 240.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.35ms. Allocated memory is still 295.7MB. Free memory was 240.1MB in the beginning and 238.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,967 INFO L158 Benchmark]: Boogie Preprocessor took 35.05ms. Allocated memory is still 295.7MB. Free memory was 238.5MB in the beginning and 237.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,967 INFO L158 Benchmark]: RCFGBuilder took 282.94ms. Allocated memory is still 295.7MB. Free memory was 236.4MB in the beginning and 224.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,968 INFO L158 Benchmark]: TraceAbstraction took 884180.97ms. Allocated memory was 295.7MB in the beginning and 1.0GB in the end (delta: 724.6MB). Free memory was 223.9MB in the beginning and 692.1MB in the end (delta: -468.3MB). Peak memory consumption was 255.8MB. Max. memory is 8.0GB. [2023-12-25 00:13:13,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-25 00:13:13,971 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 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 183.5MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 152.36ms. Allocated memory is still 295.7MB. Free memory was 251.1MB in the beginning and 240.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.35ms. Allocated memory is still 295.7MB. Free memory was 240.1MB in the beginning and 238.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.05ms. Allocated memory is still 295.7MB. Free memory was 238.5MB in the beginning and 237.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 282.94ms. Allocated memory is still 295.7MB. Free memory was 236.4MB in the beginning and 224.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 884180.97ms. Allocated memory was 295.7MB in the beginning and 1.0GB in the end (delta: 724.6MB). Free memory was 223.9MB in the beginning and 692.1MB in the end (delta: -468.3MB). Peak memory consumption was 255.8MB. 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: 35]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 35). Cancelled while NwaCegarLoop was analyzing trace of length 8297 with TraceHistMax 5184,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [198077405] and IpTcStrategyModuleCvc4 [421389522]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 884.1s, OverallIterations: 15, TraceHistogramMax: 5184, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.8s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 231 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 886 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 629 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 523 IncrementalHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 257 mSDtfsCounter, 523 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21637 GetRequests, 21560 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13817occurred in iteration=14, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 45.2s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 10849 NumberOfCodeBlocks, 6388 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 21625 ConstructedInterpolants, 0 QuantifiedInterpolants, 39679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11268 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 24333796/25156486 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