/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:40:39,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:40:39,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 16:40:39,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:40:39,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:40:39,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:40:39,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:40:39,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:40:39,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:40:39,595 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:40:39,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:40:39,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:40:39,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:40:39,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:40:39,597 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:40:39,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:40:39,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:40:39,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:40:39,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:40:39,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:40:39,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:40:39,599 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:40:39,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:40:39,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:40:39,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:40:39,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:40:39,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:40:39,601 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:40:39,602 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:40:39,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:40:39,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:40:39,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:40:39,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:40:39,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:40:39,822 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:40:39,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_01.i [2023-12-21 16:40:40,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:40:41,039 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:40:41,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_01.i [2023-12-21 16:40:41,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d77cb49/1b3a0c69b291416a999c232b41e2ecbe/FLAGd104141fd [2023-12-21 16:40:41,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d77cb49/1b3a0c69b291416a999c232b41e2ecbe [2023-12-21 16:40:41,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:40:41,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:40:41,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:40:41,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:40:41,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:40:41,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5a7aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41, skipping insertion in model container [2023-12-21 16:40:41,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:40:41,185 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_01.i[814,827] [2023-12-21 16:40:41,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:40:41,206 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:40:41,214 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_01.i[814,827] [2023-12-21 16:40:41,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:40:41,229 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:40:41,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41 WrapperNode [2023-12-21 16:40:41,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:40:41,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:40:41,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:40:41,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:40:41,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,252 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-12-21 16:40:41,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:40:41,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:40:41,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:40:41,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:40:41,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,270 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-21 16:40:41,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:40:41,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:40:41,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:40:41,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:40:41,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (1/1) ... [2023-12-21 16:40:41,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:40:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:40:41,307 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) [2023-12-21 16:40:41,316 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 [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:40:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:40:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:40:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 16:40:41,385 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:40:41,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:40:41,490 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:40:41,509 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:40:41,509 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 16:40:41,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:40:41 BoogieIcfgContainer [2023-12-21 16:40:41,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:40:41,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:40:41,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:40:41,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:40:41,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:40:41" (1/3) ... [2023-12-21 16:40:41,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b25322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:40:41, skipping insertion in model container [2023-12-21 16:40:41,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:40:41" (2/3) ... [2023-12-21 16:40:41,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b25322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:40:41, skipping insertion in model container [2023-12-21 16:40:41,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:40:41" (3/3) ... [2023-12-21 16:40:41,516 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_01.i [2023-12-21 16:40:41,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:40:41,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:40:41,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:40:41,579 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;@135ae398, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:40:41,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:40:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 16:40:41,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:41,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:41,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:41,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1148868036, now seen corresponding path program 1 times [2023-12-21 16:40:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126027340] [2023-12-21 16:40:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:40:41,599 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 [2023-12-21 16:40:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:41,602 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) [2023-12-21 16:40:41,625 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 [2023-12-21 16:40:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:40:41,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:40:41,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:40:41,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:40:41,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126027340] [2023-12-21 16:40:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126027340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:40:41,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:40:41,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:40:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701727647] [2023-12-21 16:40:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:40:41,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:40:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:40:41,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:40:41,759 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:40:41,813 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2023-12-21 16:40:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:40:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 16:40:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:40:41,821 INFO L225 Difference]: With dead ends: 29 [2023-12-21 16:40:41,821 INFO L226 Difference]: Without dead ends: 17 [2023-12-21 16:40:41,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:40:41,826 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:40:41,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:40:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-21 16:40:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2023-12-21 16:40:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-21 16:40:41,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2023-12-21 16:40:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:40:41,853 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-21 16:40:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-21 16:40:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:40:41,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:41,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:41,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 16:40:42,059 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 [2023-12-21 16:40:42,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:42,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1317396867, now seen corresponding path program 1 times [2023-12-21 16:40:42,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:42,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716071276] [2023-12-21 16:40:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:40:42,061 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 [2023-12-21 16:40:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:42,062 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) [2023-12-21 16:40:42,063 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 [2023-12-21 16:40:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:40:42,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:40:42,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:40:42,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:40:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:40:42,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716071276] [2023-12-21 16:40:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716071276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:40:42,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:40:42,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:40:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030501596] [2023-12-21 16:40:42,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:40:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:40:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:42,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:40:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:40:42,170 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:40:42,275 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-12-21 16:40:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:40:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 16:40:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:40:42,299 INFO L225 Difference]: With dead ends: 43 [2023-12-21 16:40:42,299 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 16:40:42,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 16:40:42,300 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:40:42,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 19 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:40:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 16:40:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 18. [2023-12-21 16:40:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-21 16:40:42,304 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2023-12-21 16:40:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:40:42,304 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-21 16:40:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-21 16:40:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 16:40:42,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:42,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:42,309 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 [2023-12-21 16:40:42,507 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 [2023-12-21 16:40:42,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:42,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 494319364, now seen corresponding path program 2 times [2023-12-21 16:40:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273801990] [2023-12-21 16:40:42,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:40:42,509 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 [2023-12-21 16:40:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:42,511 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) [2023-12-21 16:40:42,528 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 [2023-12-21 16:40:42,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:40:42,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:40:42,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:40:42,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 16:40:42,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:40:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 16:40:42,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273801990] [2023-12-21 16:40:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273801990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:40:42,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:40:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:40:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780246125] [2023-12-21 16:40:42,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:40:42,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:40:42,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:40:42,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:40:42,712 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:40:43,086 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2023-12-21 16:40:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:40:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 16:40:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:40:43,087 INFO L225 Difference]: With dead ends: 88 [2023-12-21 16:40:43,087 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 16:40:43,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:40:43,088 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 144 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 16:40:43,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 91 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 16:40:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 16:40:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 30. [2023-12-21 16:40:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-12-21 16:40:43,094 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2023-12-21 16:40:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:40:43,094 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-12-21 16:40:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-12-21 16:40:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 16:40:43,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:43,095 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:43,097 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 [2023-12-21 16:40:43,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:40:43,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:43,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash -25725724, now seen corresponding path program 3 times [2023-12-21 16:40:43,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:43,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938841282] [2023-12-21 16:40:43,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:40:43,299 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 [2023-12-21 16:40:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:43,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:40:43,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 16:40:43,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 16:40:43,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:40:43,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:40:43,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 16:40:43,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:40:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 16:40:43,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938841282] [2023-12-21 16:40:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938841282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:40:43,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:40:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 16:40:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321822541] [2023-12-21 16:40:43,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:40:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:40:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:40:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:40:43,818 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:40:45,228 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2023-12-21 16:40:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:40:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 16:40:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:40:45,230 INFO L225 Difference]: With dead ends: 178 [2023-12-21 16:40:45,230 INFO L226 Difference]: Without dead ends: 160 [2023-12-21 16:40:45,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:40:45,231 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 536 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:40:45,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 397 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 16:40:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-21 16:40:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 54. [2023-12-21 16:40:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2023-12-21 16:40:45,241 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 28 [2023-12-21 16:40:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:40:45,241 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2023-12-21 16:40:45,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2023-12-21 16:40:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 16:40:45,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:45,242 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:45,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 16:40:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:40:45,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:45,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2032588636, now seen corresponding path program 4 times [2023-12-21 16:40:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544862185] [2023-12-21 16:40:45,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:40:45,448 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 [2023-12-21 16:40:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:45,449 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) [2023-12-21 16:40:45,449 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 [2023-12-21 16:40:45,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:40:45,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:40:45,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:40:45,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:40:45,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:40:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:40:47,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:47,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544862185] [2023-12-21 16:40:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544862185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:40:47,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:40:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:40:47,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037175691] [2023-12-21 16:40:47,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:40:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:40:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:40:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:40:47,025 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:40:54,650 INFO L93 Difference]: Finished difference Result 358 states and 409 transitions. [2023-12-21 16:40:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:40:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 16:40:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:40:54,653 INFO L225 Difference]: With dead ends: 358 [2023-12-21 16:40:54,653 INFO L226 Difference]: Without dead ends: 328 [2023-12-21 16:40:54,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:40:54,656 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2460 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:40:54,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1657 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1256 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 16:40:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-21 16:40:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 102. [2023-12-21 16:40:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2023-12-21 16:40:54,666 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 52 [2023-12-21 16:40:54,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:40:54,667 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2023-12-21 16:40:54,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2023-12-21 16:40:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 16:40:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:40:54,668 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:40:54,675 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 (6)] Ended with exit code 0 [2023-12-21 16:40:54,873 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 [2023-12-21 16:40:54,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:40:54,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:40:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -260739036, now seen corresponding path program 5 times [2023-12-21 16:40:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:40:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032759488] [2023-12-21 16:40:54,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:40:54,874 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 [2023-12-21 16:40:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:40:54,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:40:54,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:40:56,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 16:40:56,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:40:56,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 16:40:56,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:40:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:40:57,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:03,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032759488] [2023-12-21 16:41:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032759488] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:03,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:41:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723452890] [2023-12-21 16:41:03,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:41:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:41:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:41:03,193 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:53,160 INFO L93 Difference]: Finished difference Result 718 states and 817 transitions. [2023-12-21 16:41:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 16:41:53,163 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 16:41:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:53,166 INFO L225 Difference]: With dead ends: 718 [2023-12-21 16:41:53,166 INFO L226 Difference]: Without dead ends: 664 [2023-12-21 16:41:53,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=6909, Invalid=13397, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 16:41:53,173 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 9424 mSDsluCounter, 6624 mSDsCounter, 0 mSdLazyCounter, 9195 mSolverCounterSat, 4852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9424 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 14047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4852 IncrementalHoareTripleChecker+Valid, 9195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:53,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9424 Valid, 6769 Invalid, 14047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4852 Valid, 9195 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-21 16:41:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-21 16:41:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 198. [2023-12-21 16:41:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2023-12-21 16:41:53,194 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 100 [2023-12-21 16:41:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:53,195 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2023-12-21 16:41:53,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2023-12-21 16:41:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 16:41:53,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:53,200 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:53,218 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 (7)] Forceful destruction successful, exit code 0 [2023-12-21 16:41:53,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:41:53,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:53,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash 97615652, now seen corresponding path program 6 times [2023-12-21 16:41:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:53,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532217790] [2023-12-21 16:41:53,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:41:53,416 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 [2023-12-21 16:41:53,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:53,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:41:53,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:42:03,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-21 16:42:03,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:42:04,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 16:42:04,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:42:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 16:42:07,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:42:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 16:42:28,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:42:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532217790] [2023-12-21 16:42:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532217790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:42:28,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:42:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:42:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637282515] [2023-12-21 16:42:28,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:42:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:42:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:42:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:42:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:42:28,424 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:49:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:49:42,649 INFO L93 Difference]: Finished difference Result 1438 states and 1633 transitions. [2023-12-21 16:49:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 16:49:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-21 16:49:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:49:42,654 INFO L225 Difference]: With dead ends: 1438 [2023-12-21 16:49:42,654 INFO L226 Difference]: Without dead ends: 1336 [2023-12-21 16:49:42,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 417.6s TimeCoverageRelationStatistics Valid=27627, Invalid=54455, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 16:49:42,661 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 34032 mSDsluCounter, 27072 mSDsCounter, 0 mSdLazyCounter, 36811 mSolverCounterSat, 17264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34032 SdHoareTripleChecker+Valid, 27361 SdHoareTripleChecker+Invalid, 54075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17264 IncrementalHoareTripleChecker+Valid, 36811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:49:42,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34032 Valid, 27361 Invalid, 54075 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17264 Valid, 36811 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2023-12-21 16:49:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2023-12-21 16:49:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 390. [2023-12-21 16:49:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.0077120822622108) internal successors, (392), 389 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:49:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 392 transitions. [2023-12-21 16:49:42,689 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 392 transitions. Word has length 196 [2023-12-21 16:49:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:49:42,689 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 392 transitions. [2023-12-21 16:49:42,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:49:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 392 transitions. [2023-12-21 16:49:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-12-21 16:49:42,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:49:42,696 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:49:42,719 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 (8)] Ended with exit code 0 [2023-12-21 16:49:42,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:49:42,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:49:42,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:49:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1863818532, now seen corresponding path program 7 times [2023-12-21 16:49:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:49:42,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666233379] [2023-12-21 16:49:42,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 16:49:42,913 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 [2023-12-21 16:49:42,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:49:42,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:49:42,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 16:49:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:49:43,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:49:43,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:49:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:49:56,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:51:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:51:11,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:51:11,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666233379] [2023-12-21 16:51:11,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666233379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:51:11,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:51:11,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:51:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167479924] [2023-12-21 16:51:11,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:51:11,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:51:11,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:51:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:51:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:51:11,054 INFO L87 Difference]: Start difference. First operand 390 states and 392 transitions. Second operand has 384 states, 384 states have (on average 1.0182291666666667) internal successors, (391), 383 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:51:53,103 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:52:17,761 WARN L293 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:52:42,914 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:53:09,110 WARN L293 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:53:36,406 WARN L293 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:54:06,306 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:54:35,126 WARN L293 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 16:55:04,321 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 16:55:04,337 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 [2023-12-21 16:55:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-21 16:55:05,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 270.4s TimeCoverageRelationStatistics Valid=39934, Invalid=112556, Unknown=0, NotChecked=0, Total=152490 [2023-12-21 16:55:05,346 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36680 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:05,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36680 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-12-21 16:55:05,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:55:05,359 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 16:55:05,364 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 [2023-12-21 16:55:05,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:05,548 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (390states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 16:55:05,552 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-12-21 16:55:05,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:55:05,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:55:05 BoogieIcfgContainer [2023-12-21 16:55:05,555 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:55:05,555 INFO L158 Benchmark]: Toolchain (without parser) took 864497.80ms. Allocated memory was 244.3MB in the beginning and 352.3MB in the end (delta: 108.0MB). Free memory was 193.3MB in the beginning and 235.6MB in the end (delta: -42.3MB). Peak memory consumption was 257.6MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,555 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 195.0MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:55:05,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.24ms. Allocated memory is still 244.3MB. Free memory was 192.7MB in the beginning and 181.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.43ms. Allocated memory is still 244.3MB. Free memory was 181.7MB in the beginning and 180.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,556 INFO L158 Benchmark]: Boogie Preprocessor took 29.57ms. Allocated memory is still 244.3MB. Free memory was 180.1MB in the beginning and 178.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,556 INFO L158 Benchmark]: RCFGBuilder took 226.74ms. Allocated memory is still 244.3MB. Free memory was 178.1MB in the beginning and 164.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,556 INFO L158 Benchmark]: TraceAbstraction took 864043.70ms. Allocated memory was 244.3MB in the beginning and 352.3MB in the end (delta: 108.0MB). Free memory was 164.4MB in the beginning and 235.6MB in the end (delta: -71.1MB). Peak memory consumption was 228.2MB. Max. memory is 8.0GB. [2023-12-21 16:55:05,557 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 195.0MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.24ms. Allocated memory is still 244.3MB. Free memory was 192.7MB in the beginning and 181.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.43ms. Allocated memory is still 244.3MB. Free memory was 181.7MB in the beginning and 180.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.57ms. Allocated memory is still 244.3MB. Free memory was 180.1MB in the beginning and 178.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 226.74ms. Allocated memory is still 244.3MB. Free memory was 178.1MB in the beginning and 164.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 864043.70ms. Allocated memory was 244.3MB in the beginning and 352.3MB in the end (delta: 108.0MB). Free memory was 164.4MB in the beginning and 235.6MB in the end (delta: -71.1MB). Peak memory consumption was 228.2MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (390states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 864.0s, OverallIterations: 8, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 728.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46620 SdHoareTripleChecker+Valid, 67.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46620 mSDsluCounter, 36305 SdHoareTripleChecker+Invalid, 58.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35724 mSDsCounter, 23754 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85795 IncrementalHoareTripleChecker+Invalid, 109549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23754 mSolverCounterUnsat, 581 mSDtfsCounter, 85795 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1770 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 935 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5856 ImplicationChecksByTransitivity, 741.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=7, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1811 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 13.0s SatisfiabilityAnalysisTime, 120.2s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 1573 ConstructedInterpolants, 0 QuantifiedInterpolants, 4641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4341 ConjunctsInSsa, 388 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 48020/96040 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