/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:26:00,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:26:00,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:26:00,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:26:00,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:26:00,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:26:00,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:26:00,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:26:00,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:26:00,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:26:00,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:26:00,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:26:00,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:26:00,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:26:00,273 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:26:00,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:26:00,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:26:00,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:26:00,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:26:00,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:26:00,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:26:00,275 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:26:00,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:26:00,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:26:00,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:26:00,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:26:00,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:26:00,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:26:00,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:26:00,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:26:00,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:26:00,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:26:00,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:26:00,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:26:00,279 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:26:00,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:26:00,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:26:00,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:26:00,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:26:00,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:26:00,566 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:26:00,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2023-12-25 06:26:01,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:26:01,882 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:26:01,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2023-12-25 06:26:01,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8be6d03/ea30d1cc1fc849669155ae2c528ba04e/FLAG67cd71b1e [2023-12-25 06:26:01,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8be6d03/ea30d1cc1fc849669155ae2c528ba04e [2023-12-25 06:26:01,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:26:01,907 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:26:01,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:26:01,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:26:01,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:26:01,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:26:01" (1/1) ... [2023-12-25 06:26:01,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322925fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:01, skipping insertion in model container [2023-12-25 06:26:01,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:26:01" (1/1) ... [2023-12-25 06:26:01,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:26:02,054 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2023-12-25 06:26:02,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:26:02,068 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:26:02,080 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2023-12-25 06:26:02,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:26:02,091 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:26:02,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02 WrapperNode [2023-12-25 06:26:02,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:26:02,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:26:02,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:26:02,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:26:02,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,117 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-12-25 06:26:02,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:26:02,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:26:02,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:26:02,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:26:02,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,136 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]. [2023-12-25 06:26:02,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:26:02,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:26:02,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:26:02,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:26:02,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (1/1) ... [2023-12-25 06:26:02,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:26:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:26:02,176 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) [2023-12-25 06:26:02,213 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 [2023-12-25 06:26:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:26:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:26:02,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:26:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:26:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-12-25 06:26:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-12-25 06:26:02,272 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:26:02,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:26:02,411 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:26:02,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:26:02,431 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:26:02,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:26:02 BoogieIcfgContainer [2023-12-25 06:26:02,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:26:02,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:26:02,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:26:02,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:26:02,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:26:01" (1/3) ... [2023-12-25 06:26:02,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0b35b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:26:02, skipping insertion in model container [2023-12-25 06:26:02,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:26:02" (2/3) ... [2023-12-25 06:26:02,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0b35b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:26:02, skipping insertion in model container [2023-12-25 06:26:02,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:26:02" (3/3) ... [2023-12-25 06:26:02,437 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2023-12-25 06:26:02,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:26:02,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:26:02,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:26:02,501 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;@cb78a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:26:02,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:26:02,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:26:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:26:02,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:02,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:02,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2023-12-25 06:26:02,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:02,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693342025] [2023-12-25 06:26:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:26:02,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:02,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:02,548 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) [2023-12-25 06:26:02,548 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 [2023-12-25 06:26:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:26:02,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:26:02,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:26:02,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:26:02,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693342025] [2023-12-25 06:26:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693342025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:26:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:26:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:26:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329468671] [2023-12-25 06:26:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:26:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:26:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:26:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:26:02,698 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:26:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:02,788 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-12-25 06:26:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:26:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:26:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:02,795 INFO L225 Difference]: With dead ends: 22 [2023-12-25 06:26:02,795 INFO L226 Difference]: Without dead ends: 14 [2023-12-25 06:26:02,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:26:02,799 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:02,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-25 06:26:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-25 06:26:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-25 06:26:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-25 06:26:02,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-12-25 06:26:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:02,829 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-25 06:26:02,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:26:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-25 06:26:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 06:26:02,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:02,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:02,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 06:26:03,033 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 [2023-12-25 06:26:03,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:03,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2023-12-25 06:26:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109483650] [2023-12-25 06:26:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:26:03,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:03,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:03,037 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) [2023-12-25 06:26:03,038 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 [2023-12-25 06:26:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:26:03,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:26:03,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 06:26:03,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:26:03,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109483650] [2023-12-25 06:26:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109483650] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:03,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:26:03,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886673292] [2023-12-25 06:26:03,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:26:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:26:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:26:03,324 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:26:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:03,392 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-12-25 06:26:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:26:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 15 [2023-12-25 06:26:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:03,394 INFO L225 Difference]: With dead ends: 21 [2023-12-25 06:26:03,394 INFO L226 Difference]: Without dead ends: 17 [2023-12-25 06:26:03,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:26:03,396 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:26:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-25 06:26:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-25 06:26:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:26:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-12-25 06:26:03,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2023-12-25 06:26:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:03,405 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-12-25 06:26:03,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:26:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-12-25 06:26:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:26:03,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:03,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:03,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-25 06:26:03,609 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 [2023-12-25 06:26:03,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:03,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2123675004, now seen corresponding path program 2 times [2023-12-25 06:26:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002300658] [2023-12-25 06:26:03,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:26:03,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:03,613 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) [2023-12-25 06:26:03,617 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 [2023-12-25 06:26:03,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:26:03,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:03,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:26:03,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 06:26:03,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:26:03,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:03,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002300658] [2023-12-25 06:26:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002300658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:03,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:03,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:26:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257763751] [2023-12-25 06:26:03,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:26:03,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:26:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:26:03,979 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-25 06:26:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:04,096 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-12-25 06:26:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:26:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2023-12-25 06:26:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:04,098 INFO L225 Difference]: With dead ends: 24 [2023-12-25 06:26:04,098 INFO L226 Difference]: Without dead ends: 20 [2023-12-25 06:26:04,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:26:04,105 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:04,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 40 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-25 06:26:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-25 06:26:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 06:26:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-25 06:26:04,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2023-12-25 06:26:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:04,109 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-25 06:26:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-25 06:26:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-25 06:26:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-25 06:26:04,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:04,110 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:04,128 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 [2023-12-25 06:26:04,324 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 [2023-12-25 06:26:04,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:04,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash 54189198, now seen corresponding path program 3 times [2023-12-25 06:26:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132664611] [2023-12-25 06:26:04,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:26:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:04,334 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) [2023-12-25 06:26:04,335 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 [2023-12-25 06:26:04,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:26:04,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:04,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:26:04,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-25 06:26:04,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:26:04,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132664611] [2023-12-25 06:26:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132664611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:04,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:04,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-25 06:26:04,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37553959] [2023-12-25 06:26:04,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:04,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:26:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:26:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:26:04,702 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-25 06:26:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:04,784 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-25 06:26:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:26:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 27 [2023-12-25 06:26:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:04,786 INFO L225 Difference]: With dead ends: 27 [2023-12-25 06:26:04,786 INFO L226 Difference]: Without dead ends: 23 [2023-12-25 06:26:04,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:26:04,789 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:04,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 61 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:26:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-25 06:26:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-25 06:26:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:26:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-25 06:26:04,798 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2023-12-25 06:26:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-25 06:26:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-25 06:26:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-25 06:26:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:26:04,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:04,800 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:04,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:05,002 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 [2023-12-25 06:26:05,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:05,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1269749436, now seen corresponding path program 4 times [2023-12-25 06:26:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:05,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736068924] [2023-12-25 06:26:05,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:26:05,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:05,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:05,005 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) [2023-12-25 06:26:05,008 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 [2023-12-25 06:26:05,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:26:05,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:05,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:26:05,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 06:26:05,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 06:26:05,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736068924] [2023-12-25 06:26:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736068924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:05,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:05,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-25 06:26:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781128126] [2023-12-25 06:26:05,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:26:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:26:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:26:05,452 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-25 06:26:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:05,544 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-12-25 06:26:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:26:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 33 [2023-12-25 06:26:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:05,545 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:26:05,546 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:26:05,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:26:05,546 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:05,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 91 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:26:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:26:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:26:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:26:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-12-25 06:26:05,550 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2023-12-25 06:26:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:05,550 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-12-25 06:26:05,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-25 06:26:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-12-25 06:26:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 06:26:05,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:05,551 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:05,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:05,753 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 [2023-12-25 06:26:05,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:05,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -4035634, now seen corresponding path program 5 times [2023-12-25 06:26:05,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:05,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690035885] [2023-12-25 06:26:05,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:26:05,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:05,756 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) [2023-12-25 06:26:05,757 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 [2023-12-25 06:26:05,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:26:05,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:05,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:26:05,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 06:26:05,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-25 06:26:06,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690035885] [2023-12-25 06:26:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690035885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:06,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-25 06:26:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166679623] [2023-12-25 06:26:06,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:26:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:26:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:26:06,358 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-25 06:26:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:06,475 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-12-25 06:26:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:26:06,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) Word has length 39 [2023-12-25 06:26:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:06,476 INFO L225 Difference]: With dead ends: 33 [2023-12-25 06:26:06,476 INFO L226 Difference]: Without dead ends: 29 [2023-12-25 06:26:06,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:26:06,477 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:06,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 128 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-25 06:26:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-25 06:26:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 06:26:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-12-25 06:26:06,481 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2023-12-25 06:26:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:06,481 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-12-25 06:26:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-25 06:26:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-12-25 06:26:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 06:26:06,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:06,483 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:06,487 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 (7)] Ended with exit code 0 [2023-12-25 06:26:06,685 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 [2023-12-25 06:26:06,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:06,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1047611388, now seen corresponding path program 6 times [2023-12-25 06:26:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28280951] [2023-12-25 06:26:06,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:26:06,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:06,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:06,687 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) [2023-12-25 06:26:06,689 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 [2023-12-25 06:26:06,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:26:06,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:06,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:26:06,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-25 06:26:06,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 06:26:07,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28280951] [2023-12-25 06:26:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28280951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:07,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-25 06:26:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529344646] [2023-12-25 06:26:07,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:07,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:26:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:26:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:26:07,405 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-25 06:26:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:07,529 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2023-12-25 06:26:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:26:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 45 [2023-12-25 06:26:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:07,530 INFO L225 Difference]: With dead ends: 36 [2023-12-25 06:26:07,530 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 06:26:07,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:26:07,531 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:07,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 145 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 06:26:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-25 06:26:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-25 06:26:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-12-25 06:26:07,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 45 [2023-12-25 06:26:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:07,535 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-12-25 06:26:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-25 06:26:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-12-25 06:26:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 06:26:07,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:07,536 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:07,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:07,739 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 [2023-12-25 06:26:07,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:07,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1466649358, now seen corresponding path program 7 times [2023-12-25 06:26:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:07,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913598176] [2023-12-25 06:26:07,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:26:07,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:07,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:07,742 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) [2023-12-25 06:26:07,744 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 [2023-12-25 06:26:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:26:07,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:26:07,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-25 06:26:07,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-25 06:26:08,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:08,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913598176] [2023-12-25 06:26:08,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913598176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:08,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-25 06:26:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225378260] [2023-12-25 06:26:08,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:26:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:26:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:26:08,593 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-25 06:26:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:08,743 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-12-25 06:26:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:26:08,744 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) Word has length 51 [2023-12-25 06:26:08,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:08,745 INFO L225 Difference]: With dead ends: 39 [2023-12-25 06:26:08,745 INFO L226 Difference]: Without dead ends: 35 [2023-12-25 06:26:08,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:26:08,746 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 120 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:08,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 176 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-25 06:26:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-25 06:26:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-25 06:26:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-12-25 06:26:08,749 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 51 [2023-12-25 06:26:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:08,750 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-12-25 06:26:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-25 06:26:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-12-25 06:26:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 06:26:08,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:08,751 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:08,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:08,953 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 [2023-12-25 06:26:08,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:08,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash 335541956, now seen corresponding path program 8 times [2023-12-25 06:26:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:08,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178469478] [2023-12-25 06:26:08,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:26:08,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:08,955 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) [2023-12-25 06:26:08,957 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 [2023-12-25 06:26:08,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:26:08,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:08,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:26:09,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-25 06:26:09,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 06:26:09,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178469478] [2023-12-25 06:26:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178469478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:26:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462257407] [2023-12-25 06:26:09,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:26:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:26:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:26:09,985 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-25 06:26:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:10,156 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-12-25 06:26:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:26:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) Word has length 57 [2023-12-25 06:26:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:10,158 INFO L225 Difference]: With dead ends: 42 [2023-12-25 06:26:10,158 INFO L226 Difference]: Without dead ends: 38 [2023-12-25 06:26:10,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:26:10,159 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 98 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:10,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 220 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-25 06:26:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-25 06:26:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 06:26:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2023-12-25 06:26:10,162 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 57 [2023-12-25 06:26:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:10,162 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2023-12-25 06:26:10,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-25 06:26:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2023-12-25 06:26:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 06:26:10,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:10,163 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:10,181 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 [2023-12-25 06:26:10,364 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 [2023-12-25 06:26:10,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:10,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -682001842, now seen corresponding path program 9 times [2023-12-25 06:26:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398925510] [2023-12-25 06:26:10,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:26:10,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:10,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:10,366 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) [2023-12-25 06:26:10,369 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 [2023-12-25 06:26:10,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:26:10,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:10,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:26:10,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-25 06:26:10,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 06:26:11,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398925510] [2023-12-25 06:26:11,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398925510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:11,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23] total 25 [2023-12-25 06:26:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709549876] [2023-12-25 06:26:11,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:11,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:26:11,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:26:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:26:11,622 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-25 06:26:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:11,833 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2023-12-25 06:26:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:26:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) Word has length 63 [2023-12-25 06:26:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:11,834 INFO L225 Difference]: With dead ends: 45 [2023-12-25 06:26:11,835 INFO L226 Difference]: Without dead ends: 41 [2023-12-25 06:26:11,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:26:11,836 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 208 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:11,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 256 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:26:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-25 06:26:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-25 06:26:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 06:26:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2023-12-25 06:26:11,840 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 63 [2023-12-25 06:26:11,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:11,840 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2023-12-25 06:26:11,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-25 06:26:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2023-12-25 06:26:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-25 06:26:11,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:11,842 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:11,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:12,045 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 [2023-12-25 06:26:12,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:12,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1904272772, now seen corresponding path program 10 times [2023-12-25 06:26:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133272127] [2023-12-25 06:26:12,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:26:12,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:12,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:12,048 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) [2023-12-25 06:26:12,049 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 [2023-12-25 06:26:12,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:26:12,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:12,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:26:12,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-25 06:26:12,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-25 06:26:12,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133272127] [2023-12-25 06:26:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133272127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:12,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2023-12-25 06:26:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148280846] [2023-12-25 06:26:12,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:26:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:12,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:26:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:26:12,937 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-25 06:26:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:13,145 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2023-12-25 06:26:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:26:13,146 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 69 [2023-12-25 06:26:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:13,147 INFO L225 Difference]: With dead ends: 48 [2023-12-25 06:26:13,147 INFO L226 Difference]: Without dead ends: 44 [2023-12-25 06:26:13,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:26:13,148 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:13,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 587 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:26:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-25 06:26:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-25 06:26:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:26:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2023-12-25 06:26:13,151 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 69 [2023-12-25 06:26:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:13,152 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2023-12-25 06:26:13,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-25 06:26:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2023-12-25 06:26:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 06:26:13,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:13,153 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:13,170 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 [2023-12-25 06:26:13,357 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 [2023-12-25 06:26:13,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -776930930, now seen corresponding path program 11 times [2023-12-25 06:26:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59941290] [2023-12-25 06:26:13,358 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:26:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:13,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:26:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:26:13,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:26:13,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:13,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 06:26:13,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 127 proven. 102 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-25 06:26:13,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:26:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 106 proven. 202 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-25 06:26:18,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:26:18,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59941290] [2023-12-25 06:26:18,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59941290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:26:18,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:26:18,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 32] total 35 [2023-12-25 06:26:18,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651392814] [2023-12-25 06:26:18,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:26:18,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 06:26:18,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:26:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 06:26:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:26:18,263 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 35 states, 25 states have (on average 2.24) internal successors, (56), 35 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) [2023-12-25 06:26:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:26:18,855 INFO L93 Difference]: Finished difference Result 102 states and 211 transitions. [2023-12-25 06:26:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:26:18,855 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 25 states have (on average 2.24) internal successors, (56), 35 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) Word has length 75 [2023-12-25 06:26:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:26:18,856 INFO L225 Difference]: With dead ends: 102 [2023-12-25 06:26:18,856 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 06:26:18,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=664, Invalid=1786, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 06:26:18,858 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:26:18,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 137 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:26:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 06:26:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 06:26:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:26:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 06:26:18,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2023-12-25 06:26:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:26:18,859 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 06:26:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 25 states have (on average 2.24) internal successors, (56), 35 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) [2023-12-25 06:26:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 06:26:18,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 06:26:18,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:26:18,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:26:19,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:26:19,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 06:26:19,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= |ULTIMATE.start_main_~input~0#1| (_ bv10 32)) [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2023-12-25 06:26:19,126 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2023-12-25 06:26:19,127 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (and (= id_~x |id_#in~x|) (not (= id_~x (_ bv0 32)))) [2023-12-25 06:26:19,127 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-12-25 06:26:19,127 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-12-25 06:26:19,129 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1] [2023-12-25 06:26:19,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:26:19,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:26:19 BoogieIcfgContainer [2023-12-25 06:26:19,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:26:19,136 INFO L158 Benchmark]: Toolchain (without parser) took 17229.55ms. Allocated memory was 291.5MB in the beginning and 421.5MB in the end (delta: 130.0MB). Free memory was 238.0MB in the beginning and 331.0MB in the end (delta: -93.0MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,137 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 217.1MB. Free memory was 165.0MB in the beginning and 164.8MB in the end (delta: 180.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:26:19,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.34ms. Allocated memory is still 291.5MB. Free memory was 238.0MB in the beginning and 227.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 291.5MB. Free memory was 227.0MB in the beginning and 225.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,138 INFO L158 Benchmark]: Boogie Preprocessor took 30.35ms. Allocated memory is still 291.5MB. Free memory was 225.6MB in the beginning and 224.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,138 INFO L158 Benchmark]: RCFGBuilder took 281.81ms. Allocated memory is still 291.5MB. Free memory was 224.1MB in the beginning and 213.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,138 INFO L158 Benchmark]: TraceAbstraction took 16703.25ms. Allocated memory was 291.5MB in the beginning and 421.5MB in the end (delta: 130.0MB). Free memory was 212.8MB in the beginning and 331.0MB in the end (delta: -118.2MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2023-12-25 06:26:19,139 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 217.1MB. Free memory was 165.0MB in the beginning and 164.8MB in the end (delta: 180.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.34ms. Allocated memory is still 291.5MB. Free memory was 238.0MB in the beginning and 227.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.18ms. Allocated memory is still 291.5MB. Free memory was 227.0MB in the beginning and 225.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.35ms. Allocated memory is still 291.5MB. Free memory was 225.6MB in the beginning and 224.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 281.81ms. Allocated memory is still 291.5MB. Free memory was 224.1MB in the beginning and 213.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 16703.25ms. Allocated memory was 291.5MB in the beginning and 421.5MB in the end (delta: 130.0MB). Free memory was 212.8MB in the beginning and 331.0MB in the end (delta: -118.2MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 12, TraceHistogramMax: 12, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 858 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 779 mSDsluCounter, 1902 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1685 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1631 IncrementalHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 217 mSDtfsCounter, 1631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1058 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=11, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 12 HoareAnnotationTreeSize, 23 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FormulaSimplificationsInter, 435 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 504 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 976 ConstructedInterpolants, 0 QuantifiedInterpolants, 5043 SizeOfPredicates, 66 NumberOfNonLiveVariables, 816 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 23 InterpolantComputations, 1 PerfectInterpolantSequences, 1369/3168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-25 06:26:19,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...