/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:57:13,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:57:13,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 00:57:13,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:57:13,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:57:13,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:57:13,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:57:13,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:57:13,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:57:13,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:57:13,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:57:13,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:57:13,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:57:13,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:57:13,289 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:57:13,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:57:13,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:57:13,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:57:13,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:57:13,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:57:13,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:57:13,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:57:13,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:57:13,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:57:13,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:57:13,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:57:13,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:57:13,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:57:13,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:57:13,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:57:13,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:57:13,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:57:13,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:13,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:57:13,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:57:13,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:57:13,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:57:13,477 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:57:13,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-37.i [2024-11-03 00:57:14,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:57:14,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:57:14,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-37.i [2024-11-03 00:57:14,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98191a3f7/40cbcccf8b9141a4b9e742323a0e55eb/FLAGc0a8a529e [2024-11-03 00:57:15,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98191a3f7/40cbcccf8b9141a4b9e742323a0e55eb [2024-11-03 00:57:15,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:57:15,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:57:15,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:57:15,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:57:15,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:57:15,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ed5cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15, skipping insertion in model container [2024-11-03 00:57:15,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:57:15,405 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-37.i[916,929] [2024-11-03 00:57:15,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:57:15,472 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:57:15,482 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-37.i[916,929] [2024-11-03 00:57:15,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:57:15,526 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:57:15,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15 WrapperNode [2024-11-03 00:57:15,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:57:15,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:57:15,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:57:15,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:57:15,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,565 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177 [2024-11-03 00:57:15,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:57:15,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:57:15,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:57:15,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:57:15,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,593 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 00:57:15,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:57:15,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:57:15,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:57:15,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:57:15,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (1/1) ... [2024-11-03 00:57:15,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:57:15,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:57:15,639 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) [2024-11-03 00:57:15,641 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 [2024-11-03 00:57:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:57:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:57:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:57:15,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:57:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:57:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:57:15,735 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:57:15,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:57:29,461 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-03 00:57:29,462 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:57:29,470 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:57:29,470 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:57:29,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:29 BoogieIcfgContainer [2024-11-03 00:57:29,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:57:29,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:57:29,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:57:29,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:57:29,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:57:15" (1/3) ... [2024-11-03 00:57:29,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3119043e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:29, skipping insertion in model container [2024-11-03 00:57:29,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:15" (2/3) ... [2024-11-03 00:57:29,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3119043e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:29, skipping insertion in model container [2024-11-03 00:57:29,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:29" (3/3) ... [2024-11-03 00:57:29,483 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-37.i [2024-11-03 00:57:29,493 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:57:29,494 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:57:29,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:57:29,558 INFO L333 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, 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;@51ee8eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:57:29,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:57:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 52 states have internal predecessors, (75), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:57:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-03 00:57:29,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:57:29,570 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:57:29,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:57:29,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:57:29,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2079175466, now seen corresponding path program 1 times [2024-11-03 00:57:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:57:29,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512623368] [2024-11-03 00:57:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:57:29,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:57:29,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:57:29,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 00:57:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:57:29,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:57:29,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:57:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 00:57:30,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:57:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 00:57:30,932 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:57:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512623368] [2024-11-03 00:57:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1512623368] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:57:30,932 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:57:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:57:30,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774574519] [2024-11-03 00:57:30,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:57:30,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:57:30,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:57:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:57:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:57:30,953 INFO L87 Difference]: Start difference. First operand has 74 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 52 states have internal predecessors, (75), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:57:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:57:30,975 INFO L93 Difference]: Finished difference Result 141 states and 244 transitions. [2024-11-03 00:57:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:57:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2024-11-03 00:57:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:57:30,981 INFO L225 Difference]: With dead ends: 141 [2024-11-03 00:57:30,982 INFO L226 Difference]: Without dead ends: 70 [2024-11-03 00:57:30,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:57:30,986 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:57:30,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:57:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-03 00:57:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-03 00:57:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:57:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 108 transitions. [2024-11-03 00:57:31,016 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 108 transitions. Word has length 135 [2024-11-03 00:57:31,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:57:31,016 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 108 transitions. [2024-11-03 00:57:31,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:57:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 108 transitions. [2024-11-03 00:57:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-03 00:57:31,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:57:31,019 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:57:31,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 00:57:31,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:31,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:57:31,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:57:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1935044122, now seen corresponding path program 1 times [2024-11-03 00:57:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:57:31,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695715788] [2024-11-03 00:57:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:57:31,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:57:31,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:57:31,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 00:57:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:57:31,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:57:31,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:57:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 00:57:31,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:57:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 00:57:32,866 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:57:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695715788] [2024-11-03 00:57:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [695715788] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:57:32,866 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:57:32,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 00:57:32,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757377019] [2024-11-03 00:57:32,867 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:57:32,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 00:57:32,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:57:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 00:57:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 00:57:32,869 INFO L87 Difference]: Start difference. First operand 70 states and 108 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:57:37,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:57:41,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:57:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:57:41,560 INFO L93 Difference]: Finished difference Result 201 states and 312 transitions. [2024-11-03 00:57:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 00:57:41,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2024-11-03 00:57:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:57:41,681 INFO L225 Difference]: With dead ends: 201 [2024-11-03 00:57:41,681 INFO L226 Difference]: Without dead ends: 134 [2024-11-03 00:57:41,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 00:57:41,683 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 90 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-03 00:57:41,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 206 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2024-11-03 00:57:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-03 00:57:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2024-11-03 00:57:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-03 00:57:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2024-11-03 00:57:41,706 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 135 [2024-11-03 00:57:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:57:41,707 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2024-11-03 00:57:41,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:57:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2024-11-03 00:57:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-03 00:57:41,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:57:41,712 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:57:41,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 00:57:41,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:41,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:57:41,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:57:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1868564433, now seen corresponding path program 1 times [2024-11-03 00:57:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:57:41,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672752600] [2024-11-03 00:57:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:57:41,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:57:41,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:57:41,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:57:41,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 00:57:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:57:43,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 00:57:43,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:57:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 393 proven. 24 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-03 00:57:45,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:57:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-03 00:57:48,167 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:57:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672752600] [2024-11-03 00:57:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1672752600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:57:48,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:57:48,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-11-03 00:57:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865356719] [2024-11-03 00:57:48,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:57:48,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 00:57:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:57:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 00:57:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-03 00:57:48,169 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-03 00:57:54,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:57:58,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:58:01,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:58:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:58:01,029 INFO L93 Difference]: Finished difference Result 212 states and 318 transitions. [2024-11-03 00:58:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 00:58:01,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 136 [2024-11-03 00:58:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:58:01,129 INFO L225 Difference]: With dead ends: 212 [2024-11-03 00:58:01,130 INFO L226 Difference]: Without dead ends: 83 [2024-11-03 00:58:01,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-03 00:58:01,131 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 198 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 136 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:58:01,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 156 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 128 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2024-11-03 00:58:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-03 00:58:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2024-11-03 00:58:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:58:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2024-11-03 00:58:01,141 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 136 [2024-11-03 00:58:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:58:01,141 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2024-11-03 00:58:01,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-03 00:58:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2024-11-03 00:58:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-03 00:58:01,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:58:01,145 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:58:01,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 00:58:01,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:58:01,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:58:01,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:58:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1908803233, now seen corresponding path program 1 times [2024-11-03 00:58:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:58:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634405632] [2024-11-03 00:58:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:58:01,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:58:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:58:01,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:58:01,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 00:58:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:58:03,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 00:58:03,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:58:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 399 proven. 27 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-03 00:58:13,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:58:21,433 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 00:58:29,544 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 00:58:37,829 WARN L286 SmtUtils]: Spent 8.28s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 00:58:41,895 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 498.0 5.0))))) (and (or (forall ((~var_1_13~0 (_ FloatingPoint 8 24)) (~var_1_7~0 (_ FloatingPoint 11 53))) (fp.gt (fp.div c_currentRoundingMode ~var_1_7~0 ((_ to_fp 11 53) c_currentRoundingMode ~var_1_13~0)) .cse0)) (forall ((~var_1_15~0 (_ FloatingPoint 11 53))) (not (fp.eq .cse0 ~var_1_15~0)))) (forall ((~var_1_15~0 (_ FloatingPoint 11 53)) (~var_1_13~0 (_ FloatingPoint 8 24)) (~var_1_7~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode ~var_1_7~0 ((_ to_fp 11 53) c_currentRoundingMode ~var_1_13~0)))) (or (not (fp.gt .cse1 .cse0)) (not (fp.eq .cse1 ~var_1_15~0))))))) is different from false [2024-11-03 00:58:46,043 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 498.0 5.0))))) (and (or (forall ((~var_1_13~0 (_ FloatingPoint 8 24)) (~var_1_7~0 (_ FloatingPoint 11 53))) (fp.gt (fp.div c_currentRoundingMode ~var_1_7~0 ((_ to_fp 11 53) c_currentRoundingMode ~var_1_13~0)) .cse0)) (forall ((~var_1_15~0 (_ FloatingPoint 11 53))) (not (fp.eq .cse0 ~var_1_15~0)))) (forall ((~var_1_15~0 (_ FloatingPoint 11 53)) (~var_1_13~0 (_ FloatingPoint 8 24)) (~var_1_7~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode ~var_1_7~0 ((_ to_fp 11 53) c_currentRoundingMode ~var_1_13~0)))) (or (not (fp.gt .cse1 .cse0)) (not (fp.eq .cse1 ~var_1_15~0))))))) is different from true [2024-11-03 00:58:54,244 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 00:59:02,520 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)