/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-lit/bh2017-ex-add.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:30:41,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:30:41,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:30:41,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:30:41,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:30:41,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:30:41,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:30:41,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:30:41,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:30:41,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:30:41,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:30:41,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:30:41,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:30:41,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:30:41,273 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:30:41,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:30:41,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:30:41,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:30:41,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:30:41,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:30:41,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:30:41,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:30:41,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:30:41,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:30:41,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:30:41,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:30:41,277 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:30:41,278 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:30:41,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:30:41,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:30:41,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:30:41,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:30:41,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:30:41,500 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:30:41,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bh2017-ex-add.i [2023-12-16 16:30:42,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:30:42,777 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:30:42,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bh2017-ex-add.i [2023-12-16 16:30:42,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ce660b3/037c67c86f8741c68dc98c3ecac06f96/FLAG1d39a6bcf [2023-12-16 16:30:43,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ce660b3/037c67c86f8741c68dc98c3ecac06f96 [2023-12-16 16:30:43,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:30:43,200 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:30:43,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:30:43,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:30:43,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:30:43,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f2265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43, skipping insertion in model container [2023-12-16 16:30:43,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,228 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:30:43,336 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-lit/bh2017-ex-add.i[802,815] [2023-12-16 16:30:43,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:30:43,362 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:30:43,370 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-lit/bh2017-ex-add.i[802,815] [2023-12-16 16:30:43,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:30:43,384 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:30:43,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43 WrapperNode [2023-12-16 16:30:43,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:30:43,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:30:43,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:30:43,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:30:43,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,411 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-12-16 16:30:43,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:30:43,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:30:43,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:30:43,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:30:43,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,427 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]. [2023-12-16 16:30:43,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:30:43,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:30:43,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:30:43,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:30:43,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (1/1) ... [2023-12-16 16:30:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:30:43,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:30:43,458 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) [2023-12-16 16:30:43,467 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 [2023-12-16 16:30:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:30:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:30:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:30:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:30:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:30:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:30:43,534 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:30:43,538 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:30:43,638 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:30:43,666 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:30:43,666 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 16:30:43,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:30:43 BoogieIcfgContainer [2023-12-16 16:30:43,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:30:43,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:30:43,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:30:43,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:30:43,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:30:43" (1/3) ... [2023-12-16 16:30:43,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2077ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:30:43, skipping insertion in model container [2023-12-16 16:30:43,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:43" (2/3) ... [2023-12-16 16:30:43,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2077ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:30:43, skipping insertion in model container [2023-12-16 16:30:43,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:30:43" (3/3) ... [2023-12-16 16:30:43,675 INFO L112 eAbstractionObserver]: Analyzing ICFG bh2017-ex-add.i [2023-12-16 16:30:43,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:30:43,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:30:43,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:30:43,730 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;@58f7e84d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:30:43,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:30:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2023-12-16 16:30:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 16:30:43,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:43,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 16:30:43,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:43,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1018818160, now seen corresponding path program 1 times [2023-12-16 16:30:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:43,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830449225] [2023-12-16 16:30:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:43,750 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 [2023-12-16 16:30:43,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:43,752 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) [2023-12-16 16:30:43,754 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 [2023-12-16 16:30:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:43,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:30:43,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:30:43,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:43,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830449225] [2023-12-16 16:30:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830449225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:30:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285267843] [2023-12-16 16:30:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:30:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:30:43,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:30:43,897 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:44,009 INFO L93 Difference]: Finished difference Result 62 states and 103 transitions. [2023-12-16 16:30:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:30:44,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-16 16:30:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:44,018 INFO L225 Difference]: With dead ends: 62 [2023-12-16 16:30:44,018 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 16:30:44,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:44,023 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:44,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 105 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:30:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 16:30:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-16 16:30:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 16:30:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2023-12-16 16:30:44,076 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 6 [2023-12-16 16:30:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2023-12-16 16:30:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2023-12-16 16:30:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 16:30:44,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:44,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:44,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:30:44,279 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 [2023-12-16 16:30:44,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:44,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1709322128, now seen corresponding path program 1 times [2023-12-16 16:30:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138570019] [2023-12-16 16:30:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:44,281 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 [2023-12-16 16:30:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:44,282 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) [2023-12-16 16:30:44,283 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 [2023-12-16 16:30:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:44,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:30:44,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:30:44,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:44,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:44,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138570019] [2023-12-16 16:30:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138570019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:44,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:30:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381656162] [2023-12-16 16:30:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:30:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:30:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:30:44,353 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:30:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:44,393 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2023-12-16 16:30:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:30:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-16 16:30:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:44,394 INFO L225 Difference]: With dead ends: 105 [2023-12-16 16:30:44,394 INFO L226 Difference]: Without dead ends: 67 [2023-12-16 16:30:44,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:44,396 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:44,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:30:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-16 16:30:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-16 16:30:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 16:30:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-12-16 16:30:44,405 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 11 [2023-12-16 16:30:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:44,405 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-12-16 16:30:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:30:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-12-16 16:30:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 16:30:44,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:44,406 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:44,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 16:30:44,607 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 [2023-12-16 16:30:44,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:44,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash 493717932, now seen corresponding path program 1 times [2023-12-16 16:30:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043141424] [2023-12-16 16:30:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:44,609 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 [2023-12-16 16:30:44,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:44,610 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) [2023-12-16 16:30:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:44,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:44,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:44,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:30:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:30:44,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:30:44,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043141424] [2023-12-16 16:30:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043141424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:44,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 16:30:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697596383] [2023-12-16 16:30:44,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:30:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:30:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:30:44,799 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:44,901 INFO L93 Difference]: Finished difference Result 185 states and 275 transitions. [2023-12-16 16:30:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:30:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2023-12-16 16:30:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:44,903 INFO L225 Difference]: With dead ends: 185 [2023-12-16 16:30:44,903 INFO L226 Difference]: Without dead ends: 119 [2023-12-16 16:30:44,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:30:44,904 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 78 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:44,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-16 16:30:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-16 16:30:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 16:30:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2023-12-16 16:30:44,917 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 23 [2023-12-16 16:30:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:44,917 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2023-12-16 16:30:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2023-12-16 16:30:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 16:30:44,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:44,918 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:44,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 16:30:45,120 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 [2023-12-16 16:30:45,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:45,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:45,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1913332628, now seen corresponding path program 1 times [2023-12-16 16:30:45,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:45,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046513344] [2023-12-16 16:30:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:45,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:45,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:45,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:30:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:45,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:45,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:30:45,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:30:45,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:45,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046513344] [2023-12-16 16:30:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046513344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:45,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:45,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 16:30:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932351232] [2023-12-16 16:30:45,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:45,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:30:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:30:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:30:45,254 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:30:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:45,342 INFO L93 Difference]: Finished difference Result 333 states and 505 transitions. [2023-12-16 16:30:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:30:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2023-12-16 16:30:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:45,344 INFO L225 Difference]: With dead ends: 333 [2023-12-16 16:30:45,344 INFO L226 Difference]: Without dead ends: 215 [2023-12-16 16:30:45,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:30:45,346 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 68 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 268 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-16 16:30:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-12-16 16:30:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 169 states have (on average 1.4319526627218935) internal successors, (242), 169 states have internal predecessors, (242), 40 states have call successors, (40), 5 states have call predecessors, (40), 5 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 16:30:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 322 transitions. [2023-12-16 16:30:45,364 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 322 transitions. Word has length 28 [2023-12-16 16:30:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:45,364 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 322 transitions. [2023-12-16 16:30:45,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:30:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 322 transitions. [2023-12-16 16:30:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 16:30:45,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:45,367 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-16 16:30:45,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:45,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:45,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:45,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash 947411444, now seen corresponding path program 1 times [2023-12-16 16:30:45,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:45,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489193114] [2023-12-16 16:30:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:45,573 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 [2023-12-16 16:30:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:45,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:45,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:30:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:45,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:45,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 16:30:45,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 16:30:45,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489193114] [2023-12-16 16:30:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489193114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:45,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:45,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 16:30:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553676626] [2023-12-16 16:30:45,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:45,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:30:45,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:30:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:30:45,794 INFO L87 Difference]: Start difference. First operand 215 states and 322 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 16:30:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:45,945 INFO L93 Difference]: Finished difference Result 659 states and 1023 transitions. [2023-12-16 16:30:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 16:30:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 71 [2023-12-16 16:30:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:45,948 INFO L225 Difference]: With dead ends: 659 [2023-12-16 16:30:45,949 INFO L226 Difference]: Without dead ends: 445 [2023-12-16 16:30:45,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:30:45,950 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 164 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:45,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 411 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-16 16:30:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-12-16 16:30:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 354 states have (on average 1.4463276836158192) internal successors, (512), 354 states have internal predecessors, (512), 85 states have call successors, (85), 5 states have call predecessors, (85), 5 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 16:30:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 682 transitions. [2023-12-16 16:30:45,983 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 682 transitions. Word has length 71 [2023-12-16 16:30:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:45,983 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 682 transitions. [2023-12-16 16:30:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 16:30:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 682 transitions. [2023-12-16 16:30:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 16:30:45,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:45,986 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2023-12-16 16:30:45,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:46,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:46,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2054510107, now seen corresponding path program 1 times [2023-12-16 16:30:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731727576] [2023-12-16 16:30:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:46,190 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 [2023-12-16 16:30:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:46,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:46,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:30:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:46,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:46,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 16:30:46,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 16:30:46,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731727576] [2023-12-16 16:30:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731727576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:46,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:46,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 16:30:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120491482] [2023-12-16 16:30:46,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:30:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:30:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:30:46,414 INFO L87 Difference]: Start difference. First operand 445 states and 682 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 16:30:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:46,596 INFO L93 Difference]: Finished difference Result 1394 states and 2193 transitions. [2023-12-16 16:30:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 16:30:46,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 73 [2023-12-16 16:30:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:46,602 INFO L225 Difference]: With dead ends: 1394 [2023-12-16 16:30:46,602 INFO L226 Difference]: Without dead ends: 950 [2023-12-16 16:30:46,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:30:46,605 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 179 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:46,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 396 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-16 16:30:46,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2023-12-16 16:30:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 764 states have (on average 1.448952879581152) internal successors, (1107), 764 states have internal predecessors, (1107), 180 states have call successors, (180), 5 states have call predecessors, (180), 5 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-16 16:30:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1467 transitions. [2023-12-16 16:30:46,703 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1467 transitions. Word has length 73 [2023-12-16 16:30:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:46,705 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1467 transitions. [2023-12-16 16:30:46,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 16:30:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1467 transitions. [2023-12-16 16:30:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 16:30:46,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:46,717 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2023-12-16 16:30:46,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 16:30:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:46,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:46,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1559993432, now seen corresponding path program 2 times [2023-12-16 16:30:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309378644] [2023-12-16 16:30:46,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:46,921 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 [2023-12-16 16:30:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:46,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:46,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 16:30:46,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:46,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:46,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:30:46,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 36 proven. 308 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 16:30:47,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 36 proven. 308 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 16:30:47,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309378644] [2023-12-16 16:30:47,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309378644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:47,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:47,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 16:30:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226388021] [2023-12-16 16:30:47,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:30:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:30:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:30:47,505 INFO L87 Difference]: Start difference. First operand 950 states and 1467 transitions. Second operand has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2023-12-16 16:30:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:48,207 INFO L93 Difference]: Finished difference Result 2909 states and 4593 transitions. [2023-12-16 16:30:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 16:30:48,207 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) Word has length 156 [2023-12-16 16:30:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:48,215 INFO L225 Difference]: With dead ends: 2909 [2023-12-16 16:30:48,215 INFO L226 Difference]: Without dead ends: 1960 [2023-12-16 16:30:48,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2023-12-16 16:30:48,217 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 676 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:48,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1666 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:30:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2023-12-16 16:30:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2023-12-16 16:30:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1584 states have (on average 1.4501262626262625) internal successors, (2297), 1584 states have internal predecessors, (2297), 370 states have call successors, (370), 5 states have call predecessors, (370), 5 states have return successors, (370), 370 states have call predecessors, (370), 370 states have call successors, (370) [2023-12-16 16:30:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3037 transitions. [2023-12-16 16:30:48,323 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3037 transitions. Word has length 156 [2023-12-16 16:30:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:48,324 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 3037 transitions. [2023-12-16 16:30:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 20 states have internal predecessors, (130), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2023-12-16 16:30:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3037 transitions. [2023-12-16 16:30:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-16 16:30:48,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:48,327 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1] [2023-12-16 16:30:48,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:48,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:48,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1186161175, now seen corresponding path program 2 times [2023-12-16 16:30:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:48,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214856121] [2023-12-16 16:30:48,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:48,532 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 [2023-12-16 16:30:48,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:48,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:48,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 16:30:48,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:48,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:48,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:30:48,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 36 proven. 324 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 16:30:48,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 36 proven. 324 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 16:30:49,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214856121] [2023-12-16 16:30:49,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214856121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:49,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 16:30:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883715235] [2023-12-16 16:30:49,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:49,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:30:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:30:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:30:49,092 INFO L87 Difference]: Start difference. First operand 1960 states and 3037 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2023-12-16 16:30:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:49,892 INFO L93 Difference]: Finished difference Result 6029 states and 9533 transitions. [2023-12-16 16:30:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 16:30:49,892 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) Word has length 158 [2023-12-16 16:30:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:49,909 INFO L225 Difference]: With dead ends: 6029 [2023-12-16 16:30:49,909 INFO L226 Difference]: Without dead ends: 4070 [2023-12-16 16:30:49,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2023-12-16 16:30:49,917 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 575 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:49,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1798 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 16:30:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2023-12-16 16:30:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 4070. [2023-12-16 16:30:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 3304 states have (on average 1.4488498789346247) internal successors, (4787), 3304 states have internal predecessors, (4787), 760 states have call successors, (760), 5 states have call predecessors, (760), 5 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2023-12-16 16:30:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 6307 transitions. [2023-12-16 16:30:50,082 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 6307 transitions. Word has length 158 [2023-12-16 16:30:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:50,083 INFO L495 AbstractCegarLoop]: Abstraction has 4070 states and 6307 transitions. [2023-12-16 16:30:50,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 19 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2023-12-16 16:30:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 6307 transitions. [2023-12-16 16:30:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-16 16:30:50,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:50,119 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1] [2023-12-16 16:30:50,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 16:30:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:50,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:50,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:50,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2069273128, now seen corresponding path program 3 times [2023-12-16 16:30:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125887154] [2023-12-16 16:30:50,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:30:50,323 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 [2023-12-16 16:30:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:50,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:50,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 16:30:50,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:30:50,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:50,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:30:50,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4391 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 4155 trivial. 0 not checked. [2023-12-16 16:30:50,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:50,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125887154] [2023-12-16 16:30:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125887154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:30:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991416156] [2023-12-16 16:30:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:30:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:30:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:50,451 INFO L87 Difference]: Start difference. First operand 4070 states and 6307 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:50,621 INFO L93 Difference]: Finished difference Result 4076 states and 6312 transitions. [2023-12-16 16:30:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:30:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 326 [2023-12-16 16:30:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:50,638 INFO L225 Difference]: With dead ends: 4076 [2023-12-16 16:30:50,638 INFO L226 Difference]: Without dead ends: 4074 [2023-12-16 16:30:50,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:50,643 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:50,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:30:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2023-12-16 16:30:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4074. [2023-12-16 16:30:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 3307 states have (on average 1.448442697308739) internal successors, (4790), 3307 states have internal predecessors, (4790), 760 states have call successors, (760), 6 states have call predecessors, (760), 6 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2023-12-16 16:30:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 6310 transitions. [2023-12-16 16:30:50,870 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 6310 transitions. Word has length 326 [2023-12-16 16:30:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:50,871 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 6310 transitions. [2023-12-16 16:30:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 6310 transitions. [2023-12-16 16:30:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-16 16:30:50,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:50,883 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1] [2023-12-16 16:30:50,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:51,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:51,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash 72524649, now seen corresponding path program 3 times [2023-12-16 16:30:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584234310] [2023-12-16 16:30:51,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:30:51,089 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 [2023-12-16 16:30:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:51,092 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:51,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 16:30:51,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:30:51,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:51,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:30:51,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 4189 trivial. 0 not checked. [2023-12-16 16:30:51,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:51,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584234310] [2023-12-16 16:30:51,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584234310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:51,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:51,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:30:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353606950] [2023-12-16 16:30:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:51,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:30:51,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:51,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:30:51,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:51,206 INFO L87 Difference]: Start difference. First operand 4074 states and 6310 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:51,369 INFO L93 Difference]: Finished difference Result 4074 states and 6310 transitions. [2023-12-16 16:30:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:30:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 328 [2023-12-16 16:30:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:51,371 INFO L225 Difference]: With dead ends: 4074 [2023-12-16 16:30:51,371 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 16:30:51,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:51,379 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:51,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:30:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 16:30:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 16:30:51,382 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) [2023-12-16 16:30:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 16:30:51,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 328 [2023-12-16 16:30:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:51,383 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 16:30:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:30:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 16:30:51,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 16:30:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:30:51,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 16:30:51,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:51,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 16:31:07,524 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (not (bvslt |ULTIMATE.start_main_~m~0#1| (_ bv60 32))) (bvsle |ULTIMATE.start_main_~m~0#1| (_ bv60 32)) (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~n~0#1|) (_ bv60 32))) [2023-12-16 16:31:07,524 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-12-16 16:31:07,524 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed. [2023-12-16 16:31:07,524 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~m~0#1|) (_ bv60 32)) (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~n~0#1|) (_ bv60 32))) [2023-12-16 16:31:07,525 INFO L895 garLoopResultBuilder]: At program point L19-1(line 19) the Hoare annotation is: (and (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~m~0#1|) (_ bv60 32)) (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~n~0#1|) (_ bv60 32))) [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 42) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L895 garLoopResultBuilder]: At program point L32-1(lines 18 43) the Hoare annotation is: (and (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~m~0#1|) (_ bv60 32)) (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~n~0#1|) (_ bv60 32))) [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 41) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 31) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L21-1(lines 21 31) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~m~0#1|) (_ bv60 32)) (bvslt (bvadd (_ bv4294967295 32) |ULTIMATE.start_main_~n~0#1|) (_ bv60 32)) (not (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv60 32)))) [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 40) no Hoare annotation was computed. [2023-12-16 16:31:07,525 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 30) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 18 43) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-16 16:31:07,526 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-16 16:31:07,526 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-16 16:31:07,528 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1] [2023-12-16 16:31:07,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:31:07,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:31:07 BoogieIcfgContainer [2023-12-16 16:31:07,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:31:07,539 INFO L158 Benchmark]: Toolchain (without parser) took 24338.66ms. Allocated memory was 320.9MB in the beginning and 675.3MB in the end (delta: 354.4MB). Free memory was 278.0MB in the beginning and 289.4MB in the end (delta: -11.3MB). Peak memory consumption was 405.1MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,539 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:31:07,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.77ms. Allocated memory is still 320.9MB. Free memory was 278.0MB in the beginning and 266.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.78ms. Allocated memory is still 320.9MB. Free memory was 266.8MB in the beginning and 265.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,539 INFO L158 Benchmark]: Boogie Preprocessor took 23.85ms. Allocated memory is still 320.9MB. Free memory was 265.4MB in the beginning and 263.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,539 INFO L158 Benchmark]: RCFGBuilder took 229.76ms. Allocated memory is still 320.9MB. Free memory was 263.3MB in the beginning and 251.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,540 INFO L158 Benchmark]: TraceAbstraction took 23870.63ms. Allocated memory was 320.9MB in the beginning and 675.3MB in the end (delta: 354.4MB). Free memory was 251.1MB in the beginning and 289.4MB in the end (delta: -38.3MB). Peak memory consumption was 377.9MB. Max. memory is 8.0GB. [2023-12-16 16:31:07,541 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.77ms. Allocated memory is still 320.9MB. Free memory was 278.0MB in the beginning and 266.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.78ms. Allocated memory is still 320.9MB. Free memory was 266.8MB in the beginning and 265.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.85ms. Allocated memory is still 320.9MB. Free memory was 265.4MB in the beginning and 263.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 229.76ms. Allocated memory is still 320.9MB. Free memory was 263.3MB in the beginning and 251.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 23870.63ms. Allocated memory was 320.9MB in the beginning and 675.3MB in the end (delta: 354.4MB). Free memory was 251.1MB in the beginning and 289.4MB in the end (delta: -38.3MB). Peak memory consumption was 377.9MB. 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: 13]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.8s, OverallIterations: 10, TraceHistogramMax: 39, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 15.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1855 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1802 mSDsluCounter, 5203 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4438 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1143 IncrementalHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 765 mSDtfsCounter, 1143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1703 GetRequests, 1591 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4074occurred in iteration=9, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 1485 PreInvPairs, 2606 NumberOfFragments, 62 HoareAnnotationTreeSize, 1485 FormulaSimplifications, 11368 FormulaSimplificationTreeSizeReduction, 6.1s HoareSimplificationTime, 6 FormulaSimplificationsInter, 21705 FormulaSimplificationTreeSizeReductionInter, 9.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1180 NumberOfCodeBlocks, 582 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1673 ConstructedInterpolants, 0 QuantifiedInterpolants, 3241 SizeOfPredicates, 6 NumberOfNonLiveVariables, 862 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 11976/13454 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: 18]: Loop Invariant Derived loop invariant: ((((-1 + m) % 4294967296) < 60) && (((-1 + n) % 4294967296) < 60)) RESULT: Ultimate proved your program to be correct! [2023-12-16 16:31:07,574 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...