/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 03:25:47,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 03:25:47,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 03:25:47,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 03:25:47,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 03:25:47,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 03:25:47,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 03:25:47,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 03:25:47,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 03:25:47,178 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 03:25:47,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 03:25:47,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 03:25:47,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 03:25:47,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 03:25:47,180 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 03:25:47,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 03:25:47,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 03:25:47,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 03:25:47,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 03:25:47,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 03:25:47,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 03:25:47,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 03:25:47,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 03:25:47,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 03:25:47,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:25:47,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 03:25:47,185 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 03:25:47,186 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 03:25:47,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 03:25:47,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 03:25:47,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 03:25:47,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 03:25:47,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 03:25:47,376 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 03:25:47,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c [2023-12-26 03:25:48,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 03:25:48,752 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 03:25:48,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c [2023-12-26 03:25:48,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e804aa952/b7616372bd4f4049a7d0cc0c92bf3024/FLAG3efbd776b [2023-12-26 03:25:48,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e804aa952/b7616372bd4f4049a7d0cc0c92bf3024 [2023-12-26 03:25:48,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 03:25:48,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 03:25:48,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 03:25:48,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 03:25:48,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 03:25:48,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:25:48" (1/1) ... [2023-12-26 03:25:48,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8e5c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:48, skipping insertion in model container [2023-12-26 03:25:48,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:25:48" (1/1) ... [2023-12-26 03:25:48,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 03:25:49,057 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c[1324,1337] [2023-12-26 03:25:49,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:25:49,423 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 03:25:49,432 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c[1324,1337] [2023-12-26 03:25:49,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:25:49,598 INFO L206 MainTranslator]: Completed translation [2023-12-26 03:25:49,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49 WrapperNode [2023-12-26 03:25:49,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 03:25:49,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 03:25:49,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 03:25:49,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 03:25:49,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,774 INFO L138 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2646 [2023-12-26 03:25:49,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 03:25:49,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 03:25:49,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 03:25:49,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 03:25:49,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,843 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]. [2023-12-26 03:25:49,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 03:25:49,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 03:25:49,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 03:25:49,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 03:25:49,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (1/1) ... [2023-12-26 03:25:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:25:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 03:25:49,949 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) [2023-12-26 03:25:50,029 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 [2023-12-26 03:25:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 03:25:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 03:25:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 03:25:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 03:25:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 03:25:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 03:25:50,371 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 03:25:50,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 03:25:52,097 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 03:25:52,192 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 03:25:52,192 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 03:25:52,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:25:52 BoogieIcfgContainer [2023-12-26 03:25:52,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 03:25:52,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 03:25:52,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 03:25:52,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 03:25:52,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:25:48" (1/3) ... [2023-12-26 03:25:52,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49b44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:25:52, skipping insertion in model container [2023-12-26 03:25:52,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:25:49" (2/3) ... [2023-12-26 03:25:52,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49b44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:25:52, skipping insertion in model container [2023-12-26 03:25:52,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:25:52" (3/3) ... [2023-12-26 03:25:52,198 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w16_d8_e0.c [2023-12-26 03:25:52,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 03:25:52,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 03:25:52,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 03:25:52,250 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;@6bd05cb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 03:25:52,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 03:25:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-26 03:25:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-26 03:25:52,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:25:52,264 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 03:25:52,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:25:52,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:25:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -870637129, now seen corresponding path program 1 times [2023-12-26 03:25:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:25:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981454150] [2023-12-26 03:25:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:25:52,280 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 [2023-12-26 03:25:52,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:25:52,282 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) [2023-12-26 03:25:52,292 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 [2023-12-26 03:25:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:25:52,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 03:25:52,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:25:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-12-26 03:25:52,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:25:52,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:25:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981454150] [2023-12-26 03:25:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981454150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:25:52,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:25:52,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 03:25:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217499658] [2023-12-26 03:25:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:25:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 03:25:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:25:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 03:25:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 03:25:53,002 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-26 03:25:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:25:53,058 INFO L93 Difference]: Finished difference Result 85 states and 138 transitions. [2023-12-26 03:25:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 03:25:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 100 [2023-12-26 03:25:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:25:53,068 INFO L225 Difference]: With dead ends: 85 [2023-12-26 03:25:53,068 INFO L226 Difference]: Without dead ends: 42 [2023-12-26 03:25:53,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 03:25:53,075 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 03:25:53,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 03:25:53,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-26 03:25:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-26 03:25:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-26 03:25:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2023-12-26 03:25:53,103 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 100 [2023-12-26 03:25:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:25:53,103 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2023-12-26 03:25:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-26 03:25:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2023-12-26 03:25:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-26 03:25:53,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:25:53,106 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 03:25:53,117 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 [2023-12-26 03:25:53,317 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 [2023-12-26 03:25:53,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:25:53,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:25:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -664786537, now seen corresponding path program 1 times [2023-12-26 03:25:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:25:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484410168] [2023-12-26 03:25:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:25:53,320 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 [2023-12-26 03:25:53,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:25:53,321 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) [2023-12-26 03:25:53,323 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 [2023-12-26 03:25:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:25:55,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 03:25:55,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:25:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-26 03:25:55,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:25:55,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:25:55,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484410168] [2023-12-26 03:25:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484410168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:25:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:25:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 03:25:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687429686] [2023-12-26 03:25:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:25:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 03:25:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:25:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 03:25:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 03:25:55,383 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-26 03:25:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:25:55,738 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2023-12-26 03:25:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 03:25:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-12-26 03:25:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:25:55,740 INFO L225 Difference]: With dead ends: 79 [2023-12-26 03:25:55,740 INFO L226 Difference]: Without dead ends: 77 [2023-12-26 03:25:55,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 03:25:55,741 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-26 03:25:55,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-26 03:25:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-26 03:25:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-12-26 03:25:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-26 03:25:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2023-12-26 03:25:55,756 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 100 [2023-12-26 03:25:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:25:55,757 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2023-12-26 03:25:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-26 03:25:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2023-12-26 03:25:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-26 03:25:55,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:25:55,760 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-26 03:25:55,769 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 [2023-12-26 03:25:55,962 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 [2023-12-26 03:25:55,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:25:55,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:25:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash 11346597, now seen corresponding path program 1 times [2023-12-26 03:25:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:25:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510185188] [2023-12-26 03:25:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:25:55,966 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 [2023-12-26 03:25:55,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:25:55,968 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) [2023-12-26 03:25:55,995 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 [2023-12-26 03:26:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:26:08,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-26 03:26:08,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:26:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-26 03:26:08,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:26:09,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:26:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510185188] [2023-12-26 03:26:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510185188] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:26:09,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [454349532] [2023-12-26 03:26:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:26:09,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:26:09,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:26:09,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 03:26:09,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-26 03:26:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:26:11,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 03:26:11,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:26:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-26 03:26:12,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:26:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [454349532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:26:12,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:26:12,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-26 03:26:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540192234] [2023-12-26 03:26:12,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:26:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-26 03:26:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:26:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-26 03:26:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-26 03:26:12,214 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) [2023-12-26 03:26:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:26:13,525 INFO L93 Difference]: Finished difference Result 114 states and 161 transitions. [2023-12-26 03:26:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 03:26:13,526 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) Word has length 199 [2023-12-26 03:26:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:26:13,529 INFO L225 Difference]: With dead ends: 114 [2023-12-26 03:26:13,530 INFO L226 Difference]: Without dead ends: 112 [2023-12-26 03:26:13,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-26 03:26:13,531 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-26 03:26:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 255 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-26 03:26:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-26 03:26:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-12-26 03:26:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-26 03:26:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 158 transitions. [2023-12-26 03:26:13,555 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 158 transitions. Word has length 199 [2023-12-26 03:26:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:26:13,557 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 158 transitions. [2023-12-26 03:26:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) [2023-12-26 03:26:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 158 transitions. [2023-12-26 03:26:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-26 03:26:13,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:26:13,566 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 03:26:13,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-26 03:26:13,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-26 03:26:13,977 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-26 03:26:13,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:26:13,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:26:13,978 INFO L85 PathProgramCache]: Analyzing trace with hash -206565673, now seen corresponding path program 2 times [2023-12-26 03:26:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:26:13,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060258054] [2023-12-26 03:26:13,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:26:13,981 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 [2023-12-26 03:26:13,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:26:13,983 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) [2023-12-26 03:26:13,998 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 [2023-12-26 03:26:42,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:26:42,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:26:42,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 5517 conjuncts, 215 conjunts are in the unsatisfiable core [2023-12-26 03:26:42,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:27:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4615 backedges. 405 proven. 343 refuted. 0 times theorem prover too weak. 3867 trivial. 0 not checked. [2023-12-26 03:27:05,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:27:05,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:27:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060258054] [2023-12-26 03:27:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060258054] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:27:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768223020] [2023-12-26 03:27:05,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:27:05,924 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:27:05,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:27:05,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 03:27:05,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-26 03:27:09,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:27:09,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:27:09,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 5517 conjuncts, 204 conjunts are in the unsatisfiable core [2023-12-26 03:27:09,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:28:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4615 backedges. 339 proven. 292 refuted. 0 times theorem prover too weak. 3984 trivial. 0 not checked. [2023-12-26 03:28:05,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:28:06,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1768223020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:28:06,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:28:06,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 31 [2023-12-26 03:28:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891208209] [2023-12-26 03:28:06,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:28:06,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-26 03:28:06,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:28:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-26 03:28:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=974, Unknown=9, NotChecked=0, Total=1122 [2023-12-26 03:28:06,351 INFO L87 Difference]: Start difference. First operand 111 states and 158 transitions. Second operand has 31 states, 23 states have (on average 4.391304347826087) internal successors, (101), 29 states have internal predecessors, (101), 19 states have call successors, (80), 1 states have call predecessors, (80), 2 states have return successors, (80), 13 states have call predecessors, (80), 19 states have call successors, (80) [2023-12-26 03:28:11,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:15,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:21,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:25,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:29,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:33,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:37,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:41,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:45,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:49,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:53,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:57,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:00,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:03,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:04,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:06,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:11,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:16,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:17,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:19,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:42,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:47,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:09,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:13,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:18,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:23,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:27,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:32,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:12,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:17,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:21,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:32:15,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:32:19,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:32:23,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:32:27,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:33:15,085 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-26 03:33:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-26 03:33:15,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 190.8s TimeCoverageRelationStatistics Valid=324, Invalid=1711, Unknown=35, NotChecked=0, Total=2070 [2023-12-26 03:33:15,087 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 41 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.5s IncrementalHoareTripleChecker+Time [2023-12-26 03:33:15,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 558 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1261 Invalid, 27 Unknown, 0 Unchecked, 138.5s Time] [2023-12-26 03:33:15,094 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 101 [2023-12-26 03:33:15,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-26 03:33:15,324 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 [2023-12-26 03:33:15,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-26 03:33:15,488 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:950) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:341) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:286) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:310) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.propagateNewDownStates(NestedWordAutomatonReachableStates.java:1201) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:989) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 49 more [2023-12-26 03:33:15,495 INFO L158 Benchmark]: Toolchain (without parser) took 446710.33ms. Allocated memory was 179.3MB in the beginning and 665.8MB in the end (delta: 486.5MB). Free memory was 111.4MB in the beginning and 308.5MB in the end (delta: -197.1MB). Peak memory consumption was 291.8MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,496 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 03:33:15,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 813.80ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 111.2MB in the beginning and 120.3MB in the end (delta: -9.2MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 174.56ms. Allocated memory is still 216.0MB. Free memory was 119.8MB in the beginning and 154.7MB in the end (delta: -34.9MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,496 INFO L158 Benchmark]: Boogie Preprocessor took 147.50ms. Allocated memory is still 216.0MB. Free memory was 154.7MB in the beginning and 131.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,496 INFO L158 Benchmark]: RCFGBuilder took 2268.01ms. Allocated memory was 216.0MB in the beginning and 314.6MB in the end (delta: 98.6MB). Free memory was 131.6MB in the beginning and 192.7MB in the end (delta: -61.1MB). Peak memory consumption was 126.0MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,497 INFO L158 Benchmark]: TraceAbstraction took 443301.31ms. Allocated memory was 314.6MB in the beginning and 665.8MB in the end (delta: 351.3MB). Free memory was 192.2MB in the beginning and 308.5MB in the end (delta: -116.3MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. [2023-12-26 03:33:15,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 813.80ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 111.2MB in the beginning and 120.3MB in the end (delta: -9.2MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 174.56ms. Allocated memory is still 216.0MB. Free memory was 119.8MB in the beginning and 154.7MB in the end (delta: -34.9MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.50ms. Allocated memory is still 216.0MB. Free memory was 154.7MB in the beginning and 131.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * RCFGBuilder took 2268.01ms. Allocated memory was 216.0MB in the beginning and 314.6MB in the end (delta: 98.6MB). Free memory was 131.6MB in the beginning and 192.7MB in the end (delta: -61.1MB). Peak memory consumption was 126.0MB. Max. memory is 8.0GB. * TraceAbstraction took 443301.31ms. Allocated memory was 314.6MB in the beginning and 665.8MB in the end (delta: 351.3MB). Free memory was 192.2MB in the beginning and 308.5MB in the end (delta: -116.3MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...