/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_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 21:04:44,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 21:04:44,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 21:04:44,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 21:04:44,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 21:04:44,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 21:04:44,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 21:04:44,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 21:04:44,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 21:04:44,689 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 21:04:44,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 21:04:44,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 21:04:44,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 21:04:44,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 21:04:44,691 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 21:04:44,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 21:04:44,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 21:04:44,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 21:04:44,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 21:04:44,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 21:04:44,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 21:04:44,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 21:04:44,693 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 21:04:44,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 21:04:44,694 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 21:04:44,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 21:04:44,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 21:04:44,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 21:04:44,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 21:04:44,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 21:04:44,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 21:04:44,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:04:44,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 21:04:44,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 21:04:44,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 21:04:44,697 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 21:04:44,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 21:04:44,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 21:04:44,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 21:04:44,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 21:04:44,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 21:04:44,898 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 21:04:44,899 INFO L431 ainManager$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_d16_e0.c [2023-12-16 21:04:45,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 21:04:46,219 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 21:04:46,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d16_e0.c [2023-12-16 21:04:46,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b1512ce/7fe8335d8d5d444b924756435dec3eeb/FLAGc064e9e17 [2023-12-16 21:04:46,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b1512ce/7fe8335d8d5d444b924756435dec3eeb [2023-12-16 21:04:46,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 21:04:46,251 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 21:04:46,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 21:04:46,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 21:04:46,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 21:04:46,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:04:46" (1/1) ... [2023-12-16 21:04:46,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f75845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:46, skipping insertion in model container [2023-12-16 21:04:46,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:04:46" (1/1) ... [2023-12-16 21:04:46,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 21:04:46,464 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_d16_e0.c[1325,1338] [2023-12-16 21:04:46,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:04:46,839 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 21:04:46,849 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_d16_e0.c[1325,1338] [2023-12-16 21:04:46,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:04:47,003 INFO L206 MainTranslator]: Completed translation [2023-12-16 21:04:47,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47 WrapperNode [2023-12-16 21:04:47,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 21:04:47,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 21:04:47,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 21:04:47,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 21:04:47,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,208 INFO L138 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3854 [2023-12-16 21:04:47,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 21:04:47,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 21:04:47,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 21:04:47,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 21:04:47,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,292 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 21:04:47,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 21:04:47,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 21:04:47,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 21:04:47,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 21:04:47,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (1/1) ... [2023-12-16 21:04:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:04:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 21:04:47,478 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 21:04:47,501 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 21:04:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 21:04:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 21:04:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 21:04:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 21:04:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 21:04:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 21:04:47,994 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 21:04:47,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 21:04:50,611 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 21:04:50,754 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 21:04:50,754 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 21:04:50,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:04:50 BoogieIcfgContainer [2023-12-16 21:04:50,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 21:04:50,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 21:04:50,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 21:04:50,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 21:04:50,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:04:46" (1/3) ... [2023-12-16 21:04:50,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3777ff1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:04:50, skipping insertion in model container [2023-12-16 21:04:50,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:04:47" (2/3) ... [2023-12-16 21:04:50,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3777ff1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:04:50, skipping insertion in model container [2023-12-16 21:04:50,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:04:50" (3/3) ... [2023-12-16 21:04:50,759 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w16_d16_e0.c [2023-12-16 21:04:50,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 21:04:50,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 21:04:50,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 21:04:50,803 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;@187b95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 21:04:50,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 21:04:50,805 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) [2023-12-16 21:04:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 21:04:50,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:04:50,813 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] [2023-12-16 21:04:50,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:04:50,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:04:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash -870637129, now seen corresponding path program 1 times [2023-12-16 21:04:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:04:50,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208617970] [2023-12-16 21:04:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:04:50,828 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 21:04:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:04:50,831 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 21:04:50,843 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 21:04:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:04:51,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 21:04:51,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:04:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-12-16 21:04:51,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:04:51,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:04:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208617970] [2023-12-16 21:04:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208617970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:04:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:04:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 21:04:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422447982] [2023-12-16 21:04:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:04:51,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 21:04:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:04:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 21:04:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 21:04:51,824 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) [2023-12-16 21:04:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:04:51,862 INFO L93 Difference]: Finished difference Result 85 states and 138 transitions. [2023-12-16 21:04:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 21:04:51,868 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 [2023-12-16 21:04:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:04:51,872 INFO L225 Difference]: With dead ends: 85 [2023-12-16 21:04:51,872 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 21:04:51,874 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 [2023-12-16 21:04:51,876 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 [2023-12-16 21:04:51,877 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] [2023-12-16 21:04:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 21:04:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-16 21:04:51,900 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) [2023-12-16 21:04:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2023-12-16 21:04:51,902 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 100 [2023-12-16 21:04:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:04:51,903 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2023-12-16 21:04:51,903 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) [2023-12-16 21:04:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2023-12-16 21:04:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 21:04:51,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:04:51,906 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] [2023-12-16 21:04:51,920 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 21:04:52,115 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 21:04:52,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:04:52,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:04:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -664786537, now seen corresponding path program 1 times [2023-12-16 21:04:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:04:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182661473] [2023-12-16 21:04:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:04:52,118 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 21:04:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:04:52,119 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 21:04:52,126 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 21:04:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:04:54,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 21:04:54,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:04:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 21:04:54,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:04:54,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:04:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182661473] [2023-12-16 21:04:54,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182661473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:04:54,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:04:54,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 21:04:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038548491] [2023-12-16 21:04:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:04:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 21:04:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:04:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 21:04:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 21:04:54,898 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) [2023-12-16 21:04:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:04:55,400 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2023-12-16 21:04:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 21:04:55,400 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 [2023-12-16 21:04:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:04:55,401 INFO L225 Difference]: With dead ends: 79 [2023-12-16 21:04:55,401 INFO L226 Difference]: Without dead ends: 77 [2023-12-16 21:04:55,402 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 [2023-12-16 21:04:55,403 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 21:04:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 21:04:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-16 21:04:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-12-16 21:04:55,412 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) [2023-12-16 21:04:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2023-12-16 21:04:55,414 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 100 [2023-12-16 21:04:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:04:55,415 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2023-12-16 21:04:55,415 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) [2023-12-16 21:04:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2023-12-16 21:04:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 21:04:55,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:04:55,417 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] [2023-12-16 21:04:55,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 21:04:55,630 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 21:04:55,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:04:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:04:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 11346597, now seen corresponding path program 1 times [2023-12-16 21:04:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:04:55,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110391357] [2023-12-16 21:04:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:04:55,635 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 21:04:55,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:04:55,637 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 21:04:55,644 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 21:05:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:05:18,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 4714 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 21:05:18,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:05:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-16 21:05:19,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:05:19,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:05:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110391357] [2023-12-16 21:05:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110391357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:05:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [959236951] [2023-12-16 21:05:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:05:19,351 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:05:19,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:05:19,355 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) [2023-12-16 21:05:19,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 21:05:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:05:22,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 4714 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 21:05:22,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:05:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-12-16 21:05:23,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:05:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [959236951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:05:23,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:05:23,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-16 21:05:23,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712315288] [2023-12-16 21:05:23,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:05:23,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 21:05:23,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:05:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 21:05:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-16 21:05:23,279 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) [2023-12-16 21:05:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:05:24,984 INFO L93 Difference]: Finished difference Result 114 states and 161 transitions. [2023-12-16 21:05:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 21:05:24,984 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 [2023-12-16 21:05:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:05:24,986 INFO L225 Difference]: With dead ends: 114 [2023-12-16 21:05:24,986 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 21:05:24,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-16 21:05:24,987 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 21:05:24,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 255 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 21:05:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 21:05:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-12-16 21:05:24,999 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) [2023-12-16 21:05:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 158 transitions. [2023-12-16 21:05:25,000 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 158 transitions. Word has length 199 [2023-12-16 21:05:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:05:25,001 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 158 transitions. [2023-12-16 21:05:25,001 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) [2023-12-16 21:05:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 158 transitions. [2023-12-16 21:05:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 21:05:25,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:05:25,004 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] [2023-12-16 21:05:25,030 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 21:05:25,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 21:05:25,420 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 [2023-12-16 21:05:25,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:05:25,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:05:25,421 INFO L85 PathProgramCache]: Analyzing trace with hash -206565673, now seen corresponding path program 2 times [2023-12-16 21:05:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:05:25,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472771208] [2023-12-16 21:05:25,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 21:05:25,426 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 21:05:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:05:25,427 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 21:05:25,431 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 Received shutdown request... [2023-12-16 21:06:01,707 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:06:01,708 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:06:02,722 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 [2023-12-16 21:06:02,912 WARN L435 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)] Forcibly destroying the process [2023-12-16 21:06:02,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 21:06:02,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 21:06:02,940 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 21:06:02,940 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 299 with TraceHistMax 48,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [472771208] and IpTcStrategyModuleCvc4 [312893355]. [2023-12-16 21:06:02,943 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-16 21:06:02,944 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 137 [2023-12-16 21:06:02,946 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 21:06:02,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:06:02 BoogieIcfgContainer [2023-12-16 21:06:02,948 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 21:06:02,948 INFO L158 Benchmark]: Toolchain (without parser) took 76697.13ms. Allocated memory was 169.9MB in the beginning and 594.5MB in the end (delta: 424.7MB). Free memory was 109.9MB in the beginning and 428.9MB in the end (delta: -319.1MB). Peak memory consumption was 389.5MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,948 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 21:06:02,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.23ms. Allocated memory was 169.9MB in the beginning and 260.0MB in the end (delta: 90.2MB). Free memory was 109.5MB in the beginning and 152.4MB in the end (delta: -42.9MB). Peak memory consumption was 47.7MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 204.66ms. Allocated memory is still 260.0MB. Free memory was 152.4MB in the beginning and 125.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,949 INFO L158 Benchmark]: Boogie Preprocessor took 242.22ms. Allocated memory is still 260.0MB. Free memory was 125.1MB in the beginning and 197.7MB in the end (delta: -72.6MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,949 INFO L158 Benchmark]: RCFGBuilder took 3301.45ms. Allocated memory was 260.0MB in the beginning and 482.3MB in the end (delta: 222.3MB). Free memory was 197.7MB in the beginning and 309.4MB in the end (delta: -111.7MB). Peak memory consumption was 290.7MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,949 INFO L158 Benchmark]: TraceAbstraction took 72192.18ms. Allocated memory was 482.3MB in the beginning and 594.5MB in the end (delta: 112.2MB). Free memory was 308.9MB in the beginning and 428.9MB in the end (delta: -120.0MB). Peak memory consumption was 276.6MB. Max. memory is 8.0GB. [2023-12-16 21:06:02,950 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 169.9MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 750.23ms. Allocated memory was 169.9MB in the beginning and 260.0MB in the end (delta: 90.2MB). Free memory was 109.5MB in the beginning and 152.4MB in the end (delta: -42.9MB). Peak memory consumption was 47.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 204.66ms. Allocated memory is still 260.0MB. Free memory was 152.4MB in the beginning and 125.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 242.22ms. Allocated memory is still 260.0MB. Free memory was 125.1MB in the beginning and 197.7MB in the end (delta: -72.6MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3301.45ms. Allocated memory was 260.0MB in the beginning and 482.3MB in the end (delta: 222.3MB). Free memory was 197.7MB in the beginning and 309.4MB in the end (delta: -111.7MB). Peak memory consumption was 290.7MB. Max. memory is 8.0GB. * TraceAbstraction took 72192.18ms. Allocated memory was 482.3MB in the beginning and 594.5MB in the end (delta: 112.2MB). Free memory was 308.9MB in the beginning and 428.9MB in the end (delta: -120.0MB). Peak memory consumption was 276.6MB. 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 - TimeoutResultAtElement [Line: 22]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 22). Cancelled while NwaCegarLoop was analyzing trace of length 299 with TraceHistMax 48,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [472771208] and IpTcStrategyModuleCvc4 [312893355]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.2s, OverallIterations: 4, TraceHistogramMax: 48, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 293 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 636 IncrementalHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 129 mSDtfsCounter, 636 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 610 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 25.8s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 594 ConstructedInterpolants, 0 QuantifiedInterpolants, 2529 SizeOfPredicates, 105 NumberOfNonLiveVariables, 12514 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4802/4996 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown