/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/loops-crafted-1/nested_delay_nd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:44:48,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:44:48,208 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 23:44:48,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:44:48,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:44:48,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:44:48,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:44:48,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:44:48,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:44:48,247 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:44:48,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:44:48,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:44:48,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:44:48,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:44:48,250 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:44:48,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:44:48,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:44:48,250 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:44:48,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:44:48,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:44:48,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:44:48,252 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:44:48,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:44:48,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:44:48,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:44:48,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:44:48,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:44:48,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:44:48,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:44:48,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:44:48,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:44:48,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:44:48,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:44:48,255 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:44:48,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:44:48,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:44:48,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:44:48,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:44:48,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:44:48,434 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:44:48,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2023-12-24 23:44:49,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:44:49,513 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:44:49,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2023-12-24 23:44:49,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703ca94d3/76b2d52527a64350ae2508ce3131c826/FLAG3ad7173ce [2023-12-24 23:44:49,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703ca94d3/76b2d52527a64350ae2508ce3131c826 [2023-12-24 23:44:49,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:44:49,530 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:44:49,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:44:49,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:44:49,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:44:49,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ab745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49, skipping insertion in model container [2023-12-24 23:44:49,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:44:49,644 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c[465,478] [2023-12-24 23:44:49,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:44:49,663 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:44:49,671 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c[465,478] [2023-12-24 23:44:49,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:44:49,685 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:44:49,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49 WrapperNode [2023-12-24 23:44:49,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:44:49,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:44:49,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:44:49,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:44:49,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,715 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-12-24 23:44:49,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:44:49,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:44:49,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:44:49,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:44:49,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,730 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 23:44:49,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:44:49,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:44:49,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:44:49,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:44:49,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (1/1) ... [2023-12-24 23:44:49,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:44:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:44:49,762 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 23:44:49,765 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 23:44:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:44:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:44:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:44:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:44:49,823 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:44:49,824 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:44:49,929 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:44:49,956 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:44:49,957 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-24 23:44:49,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:44:49 BoogieIcfgContainer [2023-12-24 23:44:49,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:44:49,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:44:49,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:44:49,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:44:49,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:44:49" (1/3) ... [2023-12-24 23:44:49,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e25718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:44:49, skipping insertion in model container [2023-12-24 23:44:49,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:44:49" (2/3) ... [2023-12-24 23:44:49,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e25718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:44:49, skipping insertion in model container [2023-12-24 23:44:49,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:44:49" (3/3) ... [2023-12-24 23:44:49,989 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2023-12-24 23:44:50,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:44:50,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:44:50,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:44:50,033 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;@66ade7a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:44:50,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:44:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 23:44:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 23:44:50,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:50,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:50,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:50,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1500602288, now seen corresponding path program 1 times [2023-12-24 23:44:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:50,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20644196] [2023-12-24 23:44:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:44:50,059 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 23:44:50,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:50,074 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 23:44:50,089 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 23:44:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:44:50,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 23:44:50,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:50,138 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 23:44:50,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:44:50,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20644196] [2023-12-24 23:44:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20644196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:44:50,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:44:50,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:44:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197537766] [2023-12-24 23:44:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:44:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 23:44:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 23:44:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:44:50,170 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 23:44:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:50,188 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-12-24 23:44:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 23:44:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-24 23:44:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:50,194 INFO L225 Difference]: With dead ends: 32 [2023-12-24 23:44:50,194 INFO L226 Difference]: Without dead ends: 16 [2023-12-24 23:44:50,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:44:50,201 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:50,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:44:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-24 23:44:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-24 23:44:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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 23:44:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2023-12-24 23:44:50,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11 [2023-12-24 23:44:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:50,221 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2023-12-24 23:44:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 23:44:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2023-12-24 23:44:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 23:44:50,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:50,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:50,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 23:44:50,424 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 23:44:50,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:50,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash -65030621, now seen corresponding path program 1 times [2023-12-24 23:44:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229513373] [2023-12-24 23:44:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:44:50,427 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 23:44:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:50,428 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 23:44:50,451 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 23:44:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:44:50,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:44:50,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:50,520 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 23:44:50,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:44:50,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229513373] [2023-12-24 23:44:50,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229513373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:44:50,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:44:50,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:44:50,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732752513] [2023-12-24 23:44:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:44:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:44:50,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:44:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:44:50,523 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 23:44:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:50,558 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2023-12-24 23:44:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:44:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-24 23:44:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:50,559 INFO L225 Difference]: With dead ends: 33 [2023-12-24 23:44:50,559 INFO L226 Difference]: Without dead ends: 20 [2023-12-24 23:44:50,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:44:50,562 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:50,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:44:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-24 23:44:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-12-24 23:44:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 23:44:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-12-24 23:44:50,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 11 [2023-12-24 23:44:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:50,574 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-12-24 23:44:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 23:44:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-12-24 23:44:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 23:44:50,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:50,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:50,582 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 23:44:50,777 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 23:44:50,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1812390471, now seen corresponding path program 1 times [2023-12-24 23:44:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:50,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212544051] [2023-12-24 23:44:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:44:50,780 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 23:44:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:50,784 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 23:44:50,785 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 23:44:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:44:50,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:44:50,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:50,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:44:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:50,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212544051] [2023-12-24 23:44:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212544051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:44:50,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:44:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 23:44:50,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709384642] [2023-12-24 23:44:50,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:44:50,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 23:44:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 23:44:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:44:50,968 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 23:44:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:51,086 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2023-12-24 23:44:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 23:44:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) Word has length 14 [2023-12-24 23:44:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:51,088 INFO L225 Difference]: With dead ends: 41 [2023-12-24 23:44:51,088 INFO L226 Difference]: Without dead ends: 27 [2023-12-24 23:44:51,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-24 23:44:51,089 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:51,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:44:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-24 23:44:51,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-12-24 23:44:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-12-24 23:44:51,093 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 14 [2023-12-24 23:44:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:51,093 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-12-24 23:44:51,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 23:44:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-24 23:44:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:44:51,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:51,094 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:51,104 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 23:44:51,300 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 23:44:51,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:51,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash -641380061, now seen corresponding path program 2 times [2023-12-24 23:44:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:51,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707340249] [2023-12-24 23:44:51,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:44:51,303 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 23:44:51,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:51,308 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 23:44:51,311 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 23:44:51,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:44:51,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:44:51,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:44:51,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 23:44:51,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:44:51,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707340249] [2023-12-24 23:44:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707340249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:44:51,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:44:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:44:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578785479] [2023-12-24 23:44:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:44:51,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:44:51,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:44:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:44:51,428 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:51,449 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2023-12-24 23:44:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:44:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-24 23:44:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:51,451 INFO L225 Difference]: With dead ends: 72 [2023-12-24 23:44:51,451 INFO L226 Difference]: Without dead ends: 49 [2023-12-24 23:44:51,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:44:51,453 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:51,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:44:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-24 23:44:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-12-24 23:44:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 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 23:44:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2023-12-24 23:44:51,460 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 23 [2023-12-24 23:44:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:51,460 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2023-12-24 23:44:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2023-12-24 23:44:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 23:44:51,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:51,461 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:51,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 23:44:51,662 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 23:44:51,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:51,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -641320479, now seen corresponding path program 1 times [2023-12-24 23:44:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:51,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730460137] [2023-12-24 23:44:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:44:51,664 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 23:44:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:51,665 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 23:44:51,667 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 23:44:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:44:51,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:44:51,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:51,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:44:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:52,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730460137] [2023-12-24 23:44:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730460137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:44:52,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:44:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 23:44:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838907273] [2023-12-24 23:44:52,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:44:52,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:44:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:44:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:44:52,010 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 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 23:44:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:52,289 INFO L93 Difference]: Finished difference Result 128 states and 188 transitions. [2023-12-24 23:44:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 23:44:52,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-24 23:44:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:52,292 INFO L225 Difference]: With dead ends: 128 [2023-12-24 23:44:52,292 INFO L226 Difference]: Without dead ends: 84 [2023-12-24 23:44:52,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-24 23:44:52,293 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 87 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:52,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 36 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:44:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-24 23:44:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2023-12-24 23:44:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 82 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 113 transitions. [2023-12-24 23:44:52,301 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 113 transitions. Word has length 23 [2023-12-24 23:44:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 113 transitions. [2023-12-24 23:44:52,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 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 23:44:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 113 transitions. [2023-12-24 23:44:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-24 23:44:52,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:52,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:52,307 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 (6)] Ended with exit code 0 [2023-12-24 23:44:52,504 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 23:44:52,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:52,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 774615649, now seen corresponding path program 2 times [2023-12-24 23:44:52,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:52,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733117500] [2023-12-24 23:44:52,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:44:52,506 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 23:44:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:52,507 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 23:44:52,510 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 23:44:52,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:44:52,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:44:52,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:44:52,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 23:44:52,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:44:52,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733117500] [2023-12-24 23:44:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733117500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:44:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:44:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:44:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426649216] [2023-12-24 23:44:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:44:52,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:44:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:44:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:44:52,550 INFO L87 Difference]: Start difference. First operand 83 states and 113 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:52,606 INFO L93 Difference]: Finished difference Result 179 states and 245 transitions. [2023-12-24 23:44:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:44:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-24 23:44:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:52,607 INFO L225 Difference]: With dead ends: 179 [2023-12-24 23:44:52,607 INFO L226 Difference]: Without dead ends: 99 [2023-12-24 23:44:52,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 23:44:52,608 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:52,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:44:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-24 23:44:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2023-12-24 23:44:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 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 23:44:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2023-12-24 23:44:52,619 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 41 [2023-12-24 23:44:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:52,620 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2023-12-24 23:44:52,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:44:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2023-12-24 23:44:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-24 23:44:52,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:52,638 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:52,654 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 23:44:52,838 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 23:44:52,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:52,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash 831873951, now seen corresponding path program 1 times [2023-12-24 23:44:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:52,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55384674] [2023-12-24 23:44:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:44:52,840 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 23:44:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:52,842 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 23:44:52,842 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 23:44:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:44:52,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 23:44:52,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:53,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:44:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:53,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55384674] [2023-12-24 23:44:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55384674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:44:53,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:44:53,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 23:44:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477669778] [2023-12-24 23:44:53,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:44:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 23:44:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 23:44:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-24 23:44:53,594 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 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 23:44:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:44:54,668 INFO L93 Difference]: Finished difference Result 240 states and 348 transitions. [2023-12-24 23:44:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 23:44:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-24 23:44:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:44:54,671 INFO L225 Difference]: With dead ends: 240 [2023-12-24 23:44:54,671 INFO L226 Difference]: Without dead ends: 158 [2023-12-24 23:44:54,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 23:44:54,672 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 286 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 23:44:54,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 66 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 23:44:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-24 23:44:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2023-12-24 23:44:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3525641025641026) internal successors, (211), 156 states have internal predecessors, (211), 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 23:44:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 211 transitions. [2023-12-24 23:44:54,688 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 211 transitions. Word has length 41 [2023-12-24 23:44:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:44:54,689 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 211 transitions. [2023-12-24 23:44:54,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 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 23:44:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 211 transitions. [2023-12-24 23:44:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 23:44:54,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:44:54,693 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:44:54,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 23:44:54,895 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 23:44:54,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:44:54,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:44:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 246477983, now seen corresponding path program 2 times [2023-12-24 23:44:54,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:44:54,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720358871] [2023-12-24 23:44:54,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:44:54,898 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 23:44:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:44:54,900 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 23:44:54,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 23:44:54,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:44:54,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:44:54,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 23:44:54,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:55,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:44:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:44:57,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720358871] [2023-12-24 23:44:57,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720358871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:44:57,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:44:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-24 23:44:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893930554] [2023-12-24 23:44:57,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:44:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 23:44:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 23:44:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2048, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 23:44:57,149 INFO L87 Difference]: Start difference. First operand 157 states and 211 transitions. Second operand has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 52 states have internal predecessors, (150), 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 23:45:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:45:18,841 INFO L93 Difference]: Finished difference Result 935 states and 1326 transitions. [2023-12-24 23:45:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-24 23:45:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 52 states have internal predecessors, (150), 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 77 [2023-12-24 23:45:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:45:18,845 INFO L225 Difference]: With dead ends: 935 [2023-12-24 23:45:18,845 INFO L226 Difference]: Without dead ends: 781 [2023-12-24 23:45:18,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3842 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=4599, Invalid=10407, Unknown=0, NotChecked=0, Total=15006 [2023-12-24 23:45:18,849 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5499 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:45:18,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5499 Valid, 199 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 23:45:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-24 23:45:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 303. [2023-12-24 23:45:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4933774834437086) internal successors, (451), 302 states have internal predecessors, (451), 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 23:45:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 451 transitions. [2023-12-24 23:45:18,914 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 451 transitions. Word has length 77 [2023-12-24 23:45:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:45:18,915 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 451 transitions. [2023-12-24 23:45:18,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 52 states have internal predecessors, (150), 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 23:45:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 451 transitions. [2023-12-24 23:45:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 23:45:18,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:45:18,917 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:45:18,921 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 (9)] Ended with exit code 0 [2023-12-24 23:45:19,121 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 23:45:19,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:45:19,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:45:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1235784365, now seen corresponding path program 1 times [2023-12-24 23:45:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:45:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326787772] [2023-12-24 23:45:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:45:19,122 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 23:45:19,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:45:19,123 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 23:45:19,124 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 23:45:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:45:19,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 23:45:19,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:45:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:45:19,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:45:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:45:21,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:45:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326787772] [2023-12-24 23:45:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326787772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:45:21,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:45:21,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-24 23:45:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023638164] [2023-12-24 23:45:21,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:45:21,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 23:45:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:45:21,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 23:45:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=1926, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 23:45:21,365 INFO L87 Difference]: Start difference. First operand 303 states and 451 transitions. Second operand has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 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 23:45:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:45:28,740 INFO L93 Difference]: Finished difference Result 2350 states and 3794 transitions. [2023-12-24 23:45:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-24 23:45:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 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 81 [2023-12-24 23:45:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:45:28,747 INFO L225 Difference]: With dead ends: 2350 [2023-12-24 23:45:28,747 INFO L226 Difference]: Without dead ends: 2050 [2023-12-24 23:45:28,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1974, Invalid=3726, Unknown=0, NotChecked=0, Total=5700 [2023-12-24 23:45:28,749 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 831 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:45:28,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 141 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 23:45:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2023-12-24 23:45:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1789. [2023-12-24 23:45:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1788 states have (on average 1.342841163310962) internal successors, (2401), 1788 states have internal predecessors, (2401), 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 23:45:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2401 transitions. [2023-12-24 23:45:29,088 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2401 transitions. Word has length 81 [2023-12-24 23:45:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:45:29,090 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2401 transitions. [2023-12-24 23:45:29,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 51 states have internal predecessors, (155), 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 23:45:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2401 transitions. [2023-12-24 23:45:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 23:45:29,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:45:29,093 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 25, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:45:29,107 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 23:45:29,297 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 23:45:29,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:45:29,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:45:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1694628253, now seen corresponding path program 1 times [2023-12-24 23:45:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:45:29,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359261725] [2023-12-24 23:45:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:45:29,298 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 23:45:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:45:29,299 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 23:45:29,364 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 23:45:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:45:29,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-24 23:45:29,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:45:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:45:31,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:45:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:45:37,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:45:37,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359261725] [2023-12-24 23:45:37,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359261725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:45:37,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:45:37,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2023-12-24 23:45:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50197481] [2023-12-24 23:45:37,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:45:37,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-24 23:45:37,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:45:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-24 23:45:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=7601, Unknown=0, NotChecked=0, Total=10302 [2023-12-24 23:45:37,251 INFO L87 Difference]: Start difference. First operand 1789 states and 2401 transitions. Second operand has 102 states, 102 states have (on average 2.980392156862745) internal successors, (304), 101 states have internal predecessors, (304), 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 23:46:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:46:37,365 INFO L93 Difference]: Finished difference Result 10376 states and 16100 transitions. [2023-12-24 23:46:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-24 23:46:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.980392156862745) internal successors, (304), 101 states have internal predecessors, (304), 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 155 [2023-12-24 23:46:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:46:37,387 INFO L225 Difference]: With dead ends: 10376 [2023-12-24 23:46:37,387 INFO L226 Difference]: Without dead ends: 8590 [2023-12-24 23:46:37,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3675 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=7699, Invalid=14951, Unknown=0, NotChecked=0, Total=22650 [2023-12-24 23:46:37,394 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2173 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 10391 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 10399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:46:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 256 Invalid, 10399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 10391 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-24 23:46:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-24 23:46:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 2089. [2023-12-24 23:46:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 1.3414750957854407) internal successors, (2801), 2088 states have internal predecessors, (2801), 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 23:46:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2801 transitions. [2023-12-24 23:46:37,882 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2801 transitions. Word has length 155 [2023-12-24 23:46:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:46:37,882 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 2801 transitions. [2023-12-24 23:46:37,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.980392156862745) internal successors, (304), 101 states have internal predecessors, (304), 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 23:46:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2801 transitions. [2023-12-24 23:46:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-24 23:46:37,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:46:37,885 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:46:37,892 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 (11)] Ended with exit code 0 [2023-12-24 23:46:38,092 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 23:46:38,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:46:38,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:46:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1819449501, now seen corresponding path program 2 times [2023-12-24 23:46:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:46:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572944740] [2023-12-24 23:46:38,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:46:38,093 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 23:46:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:46:38,095 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 23:46:38,097 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 23:46:38,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:46:38,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:46:38,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 105 conjunts are in the unsatisfiable core [2023-12-24 23:46:38,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:46:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 0 proven. 14357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:46:44,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:46:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 0 proven. 14357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:46:59,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:46:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572944740] [2023-12-24 23:46:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572944740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:46:59,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:46:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 103] total 204 [2023-12-24 23:46:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230062054] [2023-12-24 23:46:59,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:46:59,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 205 states [2023-12-24 23:46:59,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:46:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2023-12-24 23:46:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10512, Invalid=31308, Unknown=0, NotChecked=0, Total=41820 [2023-12-24 23:46:59,127 INFO L87 Difference]: Start difference. First operand 2089 states and 2801 transitions. Second operand has 205 states, 205 states have (on average 2.9560975609756097) internal successors, (606), 204 states have internal predecessors, (606), 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 23:47:36,281 WARN L293 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 504 DAG size of output: 504 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:47:52,662 WARN L293 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 502 DAG size of output: 502 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:48:08,195 WARN L293 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 499 DAG size of output: 499 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:48:23,190 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 497 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:48:40,565 WARN L293 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 494 DAG size of output: 494 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:48:57,170 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 492 DAG size of output: 492 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:49:14,775 WARN L293 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 489 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:49:29,743 WARN L293 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 487 DAG size of output: 487 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:49:45,838 WARN L293 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 484 DAG size of output: 484 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:50:00,313 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 482 DAG size of output: 482 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:50:15,826 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 479 DAG size of output: 479 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:50:30,083 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 477 DAG size of output: 477 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:50:45,982 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 474 DAG size of output: 474 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:51:01,076 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 472 DAG size of output: 472 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:51:16,823 WARN L293 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 469 DAG size of output: 469 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:51:31,054 WARN L293 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 467 DAG size of output: 467 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:51:46,678 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 464 DAG size of output: 464 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:52:01,073 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 462 DAG size of output: 462 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:52:16,781 WARN L293 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 459 DAG size of output: 459 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:52:32,865 WARN L293 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 457 DAG size of output: 457 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:52:48,524 WARN L293 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 454 DAG size of output: 454 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:53:03,554 WARN L293 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 452 DAG size of output: 452 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:53:18,615 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 449 DAG size of output: 449 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:53:33,442 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 447 DAG size of output: 447 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:53:48,008 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 444 DAG size of output: 444 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:54:03,759 WARN L293 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 442 DAG size of output: 442 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:54:19,187 WARN L293 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 439 DAG size of output: 439 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:54:32,420 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 437 DAG size of output: 437 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:54:47,123 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 434 DAG size of output: 434 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:54:59,971 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 432 DAG size of output: 432 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:55:14,009 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 429 DAG size of output: 429 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:55:28,190 WARN L293 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:55:42,571 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 424 DAG size of output: 424 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:55:55,547 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 422 DAG size of output: 422 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:56:09,609 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 419 DAG size of output: 419 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:56:37,110 WARN L293 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 414 DAG size of output: 414 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:56:50,275 WARN L293 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 412 DAG size of output: 412 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:57:04,410 WARN L293 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 409 DAG size of output: 409 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:57:43,077 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 402 DAG size of output: 402 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:57:56,031 WARN L293 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 399 DAG size of output: 399 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:58:32,362 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 392 DAG size of output: 392 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:58:47,130 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 389 DAG size of output: 389 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 23:59:14,123 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 384 DAG size of output: 384 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 23:59:32,544 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 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:59:32,544 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 [2023-12-24 23:59:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2023-12-24 23:59:32,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24314 ImplicationChecksByTransitivity, 723.5s TimeCoverageRelationStatistics Valid=33856, Invalid=91106, Unknown=0, NotChecked=0, Total=124962 [2023-12-24 23:59:32,589 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31477 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 50828 mSolverCounterSat, 1097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31477 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 51925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 50828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:59:32,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31477 Valid, 495 Invalid, 51925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1097 Valid, 50828 Invalid, 0 Unknown, 0 Unchecked, 39.6s Time] [2023-12-24 23:59:32,591 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:59:32,600 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 23:59:32,791 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 23:59:32,794 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2089states) and FLOYD_HOARE automaton (currently 251 states, 205 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 354 known predicates. [2023-12-24 23:59:32,801 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1] [2023-12-24 23:59:32,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:59:32,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:59:32 BoogieIcfgContainer [2023-12-24 23:59:32,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:59:32,820 INFO L158 Benchmark]: Toolchain (without parser) took 883289.64ms. Allocated memory was 230.7MB in the beginning and 614.5MB in the end (delta: 383.8MB). Free memory was 178.9MB in the beginning and 195.5MB in the end (delta: -16.7MB). Peak memory consumption was 367.5MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,820 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 230.7MB. Free memory was 178.5MB in the beginning and 178.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:59:32,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.32ms. Allocated memory is still 230.7MB. Free memory was 178.9MB in the beginning and 167.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 230.7MB. Free memory was 167.3MB in the beginning and 165.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,821 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 230.7MB. Free memory was 165.6MB in the beginning and 163.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,821 INFO L158 Benchmark]: RCFGBuilder took 219.09ms. Allocated memory is still 230.7MB. Free memory was 163.6MB in the beginning and 151.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,821 INFO L158 Benchmark]: TraceAbstraction took 882835.38ms. Allocated memory was 230.7MB in the beginning and 614.5MB in the end (delta: 383.8MB). Free memory was 201.1MB in the beginning and 195.5MB in the end (delta: 5.6MB). Peak memory consumption was 388.9MB. Max. memory is 8.0GB. [2023-12-24 23:59:32,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 230.7MB. Free memory was 178.5MB in the beginning and 178.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 153.32ms. Allocated memory is still 230.7MB. Free memory was 178.9MB in the beginning and 167.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 230.7MB. Free memory was 167.3MB in the beginning and 165.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 230.7MB. Free memory was 165.6MB in the beginning and 163.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 219.09ms. Allocated memory is still 230.7MB. Free memory was 163.6MB in the beginning and 151.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 882835.38ms. Allocated memory was 230.7MB in the beginning and 614.5MB in the end (delta: 383.8MB). Free memory was 201.1MB in the beginning and 195.5MB in the end (delta: 5.6MB). Peak memory consumption was 388.9MB. 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: 12]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 12). Cancelled while NwaCegarLoop was constructing difference of abstraction (2089states) and FLOYD_HOARE automaton (currently 251 states, 205 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 354 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.8s, OverallIterations: 11, TraceHistogramMax: 98, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 844.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40469 SdHoareTripleChecker+Valid, 49.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40469 mSDsluCounter, 1309 SdHoareTripleChecker+Invalid, 43.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1172 mSDsCounter, 2035 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68283 IncrementalHoareTripleChecker+Invalid, 70318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2035 mSolverCounterUnsat, 137 mSDtfsCounter, 68283 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1771 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32983 ImplicationChecksByTransitivity, 812.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2089occurred in iteration=10, InterpolantAutomatonStates: 307, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 7262 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 34.3s InterpolantComputationTime, 782 NumberOfCodeBlocks, 740 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1460 ConstructedInterpolants, 0 QuantifiedInterpolants, 10908 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1180 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 167/39075 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