/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/hardness-nfm22/hardness_operatoramount_amount10_file-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 06:18:44,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 06:18:44,463 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 06:18:44,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 06:18:44,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 06:18:44,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 06:18:44,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 06:18:44,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 06:18:44,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 06:18:44,496 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 06:18:44,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 06:18:44,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 06:18:44,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 06:18:44,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 06:18:44,497 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 06:18:44,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 06:18:44,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 06:18:44,497 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 06:18:44,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 06:18:44,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 06:18:44,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 06:18:44,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 06:18:44,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 06:18:44,502 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 06:18:44,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 06:18:44,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 06:18:44,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 06:18:44,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 06:18:44,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:18:44,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 06:18:44,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 06:18:44,508 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 06:18:44,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 06:18:44,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 06:18:44,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 06:18:44,722 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 06:18:44,723 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 06:18:44,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-67.i [2023-12-24 06:18:45,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 06:18:46,003 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 06:18:46,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-67.i [2023-12-24 06:18:46,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9579206fc/7d423c32303f4c7693613a8d7d5785a7/FLAG186b4e812 [2023-12-24 06:18:46,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9579206fc/7d423c32303f4c7693613a8d7d5785a7 [2023-12-24 06:18:46,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 06:18:46,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 06:18:46,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 06:18:46,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 06:18:46,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 06:18:46,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9da9bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46, skipping insertion in model container [2023-12-24 06:18:46,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 06:18:46,175 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-67.i[915,928] [2023-12-24 06:18:46,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:18:46,204 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 06:18:46,213 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-67.i[915,928] [2023-12-24 06:18:46,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:18:46,232 INFO L206 MainTranslator]: Completed translation [2023-12-24 06:18:46,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46 WrapperNode [2023-12-24 06:18:46,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 06:18:46,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 06:18:46,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 06:18:46,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 06:18:46,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,259 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 57 [2023-12-24 06:18:46,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 06:18:46,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 06:18:46,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 06:18:46,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 06:18:46,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,282 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 06:18:46,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 06:18:46,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 06:18:46,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 06:18:46,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 06:18:46,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (1/1) ... [2023-12-24 06:18:46,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:18:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 06:18:46,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 06:18:46,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 06:18:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 06:18:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 06:18:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 06:18:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 06:18:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 06:18:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 06:18:46,401 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 06:18:46,403 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 06:18:46,512 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 06:18:46,576 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 06:18:46,577 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 06:18:46,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:18:46 BoogieIcfgContainer [2023-12-24 06:18:46,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 06:18:46,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 06:18:46,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 06:18:46,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 06:18:46,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:18:46" (1/3) ... [2023-12-24 06:18:46,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222240ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:18:46, skipping insertion in model container [2023-12-24 06:18:46,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:18:46" (2/3) ... [2023-12-24 06:18:46,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222240ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:18:46, skipping insertion in model container [2023-12-24 06:18:46,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:18:46" (3/3) ... [2023-12-24 06:18:46,585 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-67.i [2023-12-24 06:18:46,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 06:18:46,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 06:18:46,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 06:18:46,646 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;@5c808e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 06:18:46,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 06:18:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 06:18:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 06:18:46,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:18:46,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:18:46,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:18:46,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:18:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 748172793, now seen corresponding path program 1 times [2023-12-24 06:18:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:18:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453880894] [2023-12-24 06:18:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:18:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:18:46,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:18:46,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 06:18:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:18:46,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 06:18:46,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:18:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-24 06:18:46,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:18:46,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:18:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453880894] [2023-12-24 06:18:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453880894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:18:46,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 06:18:46,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 06:18:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521280632] [2023-12-24 06:18:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:18:46,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 06:18:46,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:18:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 06:18:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 06:18:46,849 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-24 06:18:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:18:46,881 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2023-12-24 06:18:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 06:18:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-24 06:18:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:18:46,888 INFO L225 Difference]: With dead ends: 37 [2023-12-24 06:18:46,888 INFO L226 Difference]: Without dead ends: 18 [2023-12-24 06:18:46,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 06:18:46,894 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:18:46,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 06:18:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-24 06:18:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-24 06:18:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 06:18:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-24 06:18:46,948 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 28 [2023-12-24 06:18:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:18:46,948 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-24 06:18:46,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-24 06:18:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-24 06:18:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 06:18:46,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:18:46,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:18:46,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 06:18:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:47,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:18:47,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:18:47,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1824030201, now seen corresponding path program 1 times [2023-12-24 06:18:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:18:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790798837] [2023-12-24 06:18:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:18:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:18:47,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:18:47,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 06:18:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:18:47,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 06:18:47,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:18:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-24 06:18:47,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:18:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 06:18:47,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:18:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790798837] [2023-12-24 06:18:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790798837] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 06:18:47,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 06:18:47,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-24 06:18:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990896417] [2023-12-24 06:18:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:18:47,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 06:18:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:18:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 06:18:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 06:18:47,446 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-24 06:18:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:18:47,462 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-12-24 06:18:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 06:18:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-24 06:18:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:18:47,465 INFO L225 Difference]: With dead ends: 35 [2023-12-24 06:18:47,465 INFO L226 Difference]: Without dead ends: 18 [2023-12-24 06:18:47,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 06:18:47,466 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:18:47,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 06:18:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-24 06:18:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-24 06:18:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 06:18:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-24 06:18:47,473 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 28 [2023-12-24 06:18:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:18:47,474 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-24 06:18:47,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-24 06:18:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-24 06:18:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-24 06:18:47,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:18:47,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:18:47,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 06:18:47,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:47,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:18:47,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:18:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1824089783, now seen corresponding path program 1 times [2023-12-24 06:18:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:18:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279987931] [2023-12-24 06:18:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:18:47,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:47,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:18:47,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:18:47,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 06:18:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:18:47,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 06:18:47,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:18:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-24 06:18:49,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:18:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-24 06:18:50,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:18:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279987931] [2023-12-24 06:18:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279987931] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 06:18:50,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 06:18:50,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 06:18:50,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013622958] [2023-12-24 06:18:50,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:18:50,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 06:18:50,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:18:50,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 06:18:50,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 06:18:50,182 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-24 06:18:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:18:50,226 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-12-24 06:18:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 06:18:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-24 06:18:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:18:50,227 INFO L225 Difference]: With dead ends: 19 [2023-12-24 06:18:50,227 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 06:18:50,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:18:50,230 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:18:50,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 06:18:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 06:18:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 06:18:50,232 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) [2023-12-24 06:18:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 06:18:50,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-12-24 06:18:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:18:50,233 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 06:18:50,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-24 06:18:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 06:18:50,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 06:18:50,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 06:18:50,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 06:18:50,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:18:50,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 06:18:50,450 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-24 06:18:50,450 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-24 06:18:50,450 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L902 garLoopResultBuilder]: At program point L58-2(lines 58 64) the Hoare annotation is: true [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point L58-3(lines 58 64) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L902 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: true [2023-12-24 06:18:50,451 INFO L902 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: true [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-24 06:18:50,451 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 38) no Hoare annotation was computed. [2023-12-24 06:18:50,453 INFO L899 garLoopResultBuilder]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2023-12-24 06:18:50,453 INFO L899 garLoopResultBuilder]: For program point L47(lines 41 48) no Hoare annotation was computed. [2023-12-24 06:18:50,454 INFO L902 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: true [2023-12-24 06:18:50,454 INFO L902 garLoopResultBuilder]: At program point L43-1(line 43) the Hoare annotation is: true [2023-12-24 06:18:50,455 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-24 06:18:50,456 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-24 06:18:50,456 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-24 06:18:50,457 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-24 06:18:50,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-24 06:18:50,463 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 06:18:50,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 06:18:50 BoogieIcfgContainer [2023-12-24 06:18:50,468 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 06:18:50,469 INFO L158 Benchmark]: Toolchain (without parser) took 4445.75ms. Allocated memory was 270.5MB in the beginning and 402.7MB in the end (delta: 132.1MB). Free memory was 214.6MB in the beginning and 137.9MB in the end (delta: 76.7MB). Peak memory consumption was 209.4MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,469 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 205.5MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 06:18:50,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.72ms. Allocated memory is still 270.5MB. Free memory was 214.2MB in the beginning and 202.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.90ms. Allocated memory is still 270.5MB. Free memory was 202.1MB in the beginning and 200.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,469 INFO L158 Benchmark]: Boogie Preprocessor took 34.84ms. Allocated memory is still 270.5MB. Free memory was 200.5MB in the beginning and 198.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,470 INFO L158 Benchmark]: RCFGBuilder took 283.03ms. Allocated memory is still 270.5MB. Free memory was 198.4MB in the beginning and 183.2MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,470 INFO L158 Benchmark]: TraceAbstraction took 3888.47ms. Allocated memory was 270.5MB in the beginning and 402.7MB in the end (delta: 132.1MB). Free memory was 182.7MB in the beginning and 137.9MB in the end (delta: 44.8MB). Peak memory consumption was 177.9MB. Max. memory is 8.0GB. [2023-12-24 06:18:50,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 205.5MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.72ms. Allocated memory is still 270.5MB. Free memory was 214.2MB in the beginning and 202.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.90ms. Allocated memory is still 270.5MB. Free memory was 202.1MB in the beginning and 200.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.84ms. Allocated memory is still 270.5MB. Free memory was 200.5MB in the beginning and 198.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 283.03ms. Allocated memory is still 270.5MB. Free memory was 198.4MB in the beginning and 183.2MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3888.47ms. Allocated memory was 270.5MB in the beginning and 402.7MB in the end (delta: 132.1MB). Free memory was 182.7MB in the beginning and 137.9MB in the end (delta: 44.8MB). Peak memory consumption was 177.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 50 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 17 PreInvPairs, 23 NumberOfFragments, 6 HoareAnnotationTreeSize, 17 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 297 SizeOfPredicates, 16 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 108/120 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 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-24 06:18:50,494 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...