/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 00:00:24,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 00:00:24,667 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 00:00:24,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 00:00:24,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 00:00:24,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 00:00:24,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 00:00:24,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 00:00:24,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 00:00:24,715 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 00:00:24,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 00:00:24,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 00:00:24,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 00:00:24,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 00:00:24,717 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 00:00:24,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 00:00:24,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 00:00:24,718 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 00:00:24,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 00:00:24,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 00:00:24,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 00:00:24,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 00:00:24,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 00:00:24,719 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 00:00:24,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 00:00:24,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 00:00:24,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:00:24,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 00:00:24,729 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 00:00:24,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 00:00:24,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 00:00:24,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 00:00:24,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 00:00:24,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 00:00:24,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 00:00:24,731 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 00:00:24,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 00:00:25,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 00:00:25,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 00:00:25,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 00:00:25,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 00:00:25,102 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 00:00:25,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2023-12-25 00:00:26,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 00:00:26,931 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 00:00:26,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2023-12-25 00:00:26,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edc24785/3d79149278a94a409bac159a1e3ab58c/FLAG078306924 [2023-12-25 00:00:26,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edc24785/3d79149278a94a409bac159a1e3ab58c [2023-12-25 00:00:26,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 00:00:26,955 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 00:00:26,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 00:00:26,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 00:00:26,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 00:00:26,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:00:26" (1/1) ... [2023-12-25 00:00:26,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f30419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:26, skipping insertion in model container [2023-12-25 00:00:26,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:00:26" (1/1) ... [2023-12-25 00:00:26,981 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 00:00:27,118 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2023-12-25 00:00:27,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:00:27,133 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 00:00:27,142 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2023-12-25 00:00:27,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:00:27,156 INFO L206 MainTranslator]: Completed translation [2023-12-25 00:00:27,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27 WrapperNode [2023-12-25 00:00:27,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 00:00:27,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 00:00:27,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 00:00:27,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 00:00:27,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,180 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-12-25 00:00:27,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 00:00:27,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 00:00:27,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 00:00:27,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 00:00:27,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,213 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 00:00:27,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 00:00:27,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 00:00:27,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 00:00:27,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 00:00:27,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (1/1) ... [2023-12-25 00:00:27,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:00:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 00:00:27,273 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 00:00:27,295 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 00:00:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 00:00:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 00:00:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 00:00:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 00:00:27,378 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 00:00:27,382 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 00:00:27,548 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 00:00:27,562 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 00:00:27,563 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 00:00:27,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:00:27 BoogieIcfgContainer [2023-12-25 00:00:27,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 00:00:27,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 00:00:27,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 00:00:27,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 00:00:27,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 12:00:26" (1/3) ... [2023-12-25 00:00:27,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df910b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:00:27, skipping insertion in model container [2023-12-25 00:00:27,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:00:27" (2/3) ... [2023-12-25 00:00:27,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df910b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:00:27, skipping insertion in model container [2023-12-25 00:00:27,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:00:27" (3/3) ... [2023-12-25 00:00:27,578 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark11_linear.i [2023-12-25 00:00:27,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 00:00:27,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 00:00:27,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 00:00:27,648 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;@4f03c8df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 00:00:27,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 00:00:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-25 00:00:27,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:00:27,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-25 00:00:27,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:00:27,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:00:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1839286506, now seen corresponding path program 1 times [2023-12-25 00:00:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:00:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272976003] [2023-12-25 00:00:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:00:27,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:00:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:00:27,713 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 00:00:27,748 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 00:00:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:00:27,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 00:00:27,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:00:27,802 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 00:00:27,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:00:27,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:27,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272976003] [2023-12-25 00:00:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272976003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:00:27,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:00:27,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 00:00:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663275199] [2023-12-25 00:00:27,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:00:27,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 00:00:27,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 00:00:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 00:00:27,896 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:27,926 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2023-12-25 00:00:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 00:00:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-25 00:00:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:27,933 INFO L225 Difference]: With dead ends: 17 [2023-12-25 00:00:27,934 INFO L226 Difference]: Without dead ends: 7 [2023-12-25 00:00:27,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 00:00:27,938 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:27,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 00:00:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-25 00:00:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-25 00:00:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-25 00:00:27,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2023-12-25 00:00:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:00:27,974 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-25 00:00:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-25 00:00:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-25 00:00:27,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:00:27,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-25 00:00:27,986 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 [2023-12-25 00:00:28,177 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 00:00:28,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:00:28,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:00:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1839167342, now seen corresponding path program 1 times [2023-12-25 00:00:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:00:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941655125] [2023-12-25 00:00:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:00:28,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:00:28,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:00:28,180 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 00:00:28,184 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 00:00:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:00:28,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 00:00:28,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:00:28,244 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 00:00:28,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:00:28,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941655125] [2023-12-25 00:00:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941655125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:00:28,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:00:28,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 00:00:28,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945850658] [2023-12-25 00:00:28,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:00:28,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 00:00:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 00:00:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 00:00:28,257 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:28,276 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-12-25 00:00:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 00:00:28,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-25 00:00:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:28,277 INFO L225 Difference]: With dead ends: 12 [2023-12-25 00:00:28,278 INFO L226 Difference]: Without dead ends: 8 [2023-12-25 00:00:28,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 00:00:28,279 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:28,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 00:00:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-25 00:00:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-25 00:00:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-25 00:00:28,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-12-25 00:00:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:00:28,284 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-25 00:00:28,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-25 00:00:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-25 00:00:28,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:00:28,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:00:28,304 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 [2023-12-25 00:00:28,486 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 00:00:28,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:00:28,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:00:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1181278160, now seen corresponding path program 1 times [2023-12-25 00:00:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:00:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142087212] [2023-12-25 00:00:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:00:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 00:00:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:00:28,489 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 00:00:28,493 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 00:00:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:00:28,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 00:00:28,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:00:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 00:00:28,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:00:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 00:00:28,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:00:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142087212] [2023-12-25 00:00:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142087212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:00:28,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:00:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-25 00:00:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50535509] [2023-12-25 00:00:28,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:00:28,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 00:00:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:00:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 00:00:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-25 00:00:28,866 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:00:28,936 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2023-12-25 00:00:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 00:00:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-25 00:00:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:00:28,936 INFO L225 Difference]: With dead ends: 11 [2023-12-25 00:00:28,937 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 00:00:28,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-25 00:00:28,940 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:00:28,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 00:00:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 00:00:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 00:00:28,941 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 00:00:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 00:00:28,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-12-25 00:00:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:00:28,941 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 00:00:28,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 00:00:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 00:00:28,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 00:00:28,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:00:28,951 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 00:00:29,146 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 00:00:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 00:00:29,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 25) the Hoare annotation is: (or (bvslt |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|)) [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 25) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 28) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-12-25 00:00:29,173 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2023-12-25 00:00:29,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-25 00:00:29,180 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:00:29,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:00:29 BoogieIcfgContainer [2023-12-25 00:00:29,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:00:29,189 INFO L158 Benchmark]: Toolchain (without parser) took 2234.04ms. Allocated memory is still 241.2MB. Free memory was 186.7MB in the beginning and 170.1MB in the end (delta: 16.6MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2023-12-25 00:00:29,189 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 164.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:00:29,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.07ms. Allocated memory is still 241.2MB. Free memory was 186.3MB in the beginning and 175.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 00:00:29,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.64ms. Allocated memory is still 241.2MB. Free memory was 175.5MB in the beginning and 174.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 00:00:29,190 INFO L158 Benchmark]: Boogie Preprocessor took 56.58ms. Allocated memory is still 241.2MB. Free memory was 174.1MB in the beginning and 172.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 00:00:29,190 INFO L158 Benchmark]: RCFGBuilder took 325.02ms. Allocated memory is still 241.2MB. Free memory was 172.1MB in the beginning and 161.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 00:00:29,190 INFO L158 Benchmark]: TraceAbstraction took 1616.86ms. Allocated memory is still 241.2MB. Free memory was 161.2MB in the beginning and 170.1MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:00:29,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 164.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.07ms. Allocated memory is still 241.2MB. Free memory was 186.3MB in the beginning and 175.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.64ms. Allocated memory is still 241.2MB. Free memory was 175.5MB in the beginning and 174.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.58ms. Allocated memory is still 241.2MB. Free memory was 174.1MB in the beginning and 172.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 325.02ms. Allocated memory is still 241.2MB. Free memory was 172.1MB in the beginning and 161.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1616.86ms. Allocated memory is still 241.2MB. Free memory was 161.2MB in the beginning and 170.1MB in the end (delta: -8.9MB). There was no memory consumed. 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: 16]: 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 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 SizeOfPredicates, 7 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: 23]: Loop Invariant Derived loop invariant: ((x < n) || (x == n)) RESULT: Ultimate proved your program to be correct! [2023-12-25 00:00:29,208 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...