/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 06:24:43,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 06:24:43,424 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 06:24:43,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 06:24:43,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 06:24:43,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 06:24:43,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 06:24:43,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 06:24:43,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 06:24:43,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 06:24:43,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 06:24:43,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 06:24:43,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 06:24:43,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 06:24:43,472 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 06:24:43,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 06:24:43,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 06:24:43,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 06:24:43,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 06:24:43,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 06:24:43,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 06:24:43,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 06:24:43,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 06:24:43,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 06:24:43,476 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 06:24:43,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 06:24:43,476 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 06:24:43,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 06:24:43,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 06:24:43,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 06:24:43,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 06:24:43,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 06:24:43,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 06:24:43,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 06:24:43,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 06:24:43,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 06:24:43,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 06:24:43,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 06:24:43,481 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 06:24:43,481 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 06:24:43,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 06:24:43,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 06:24:43,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 06:24:43,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 06:24:43,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:43,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 06:24:43,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 06:24:43,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 06:24:43,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 06:24:43,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 06:24:43,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2024-11-03 06:24:45,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 06:24:45,541 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 06:24:45,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2024-11-03 06:24:45,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ec0cc4e/255841b43e7146eab0d70f1bd1e94324/FLAG1533e2fea [2024-11-03 06:24:45,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ec0cc4e/255841b43e7146eab0d70f1bd1e94324 [2024-11-03 06:24:45,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 06:24:45,573 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 06:24:45,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 06:24:45,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 06:24:45,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 06:24:45,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147389cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45, skipping insertion in model container [2024-11-03 06:24:45,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 06:24:45,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c[1897,1910] [2024-11-03 06:24:45,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 06:24:45,835 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 06:24:45,857 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c[1897,1910] [2024-11-03 06:24:45,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 06:24:45,877 INFO L204 MainTranslator]: Completed translation [2024-11-03 06:24:45,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45 WrapperNode [2024-11-03 06:24:45,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 06:24:45,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 06:24:45,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 06:24:45,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 06:24:45,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,916 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-11-03 06:24:45,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 06:24:45,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 06:24:45,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 06:24:45,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 06:24:45,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,944 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 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]. [2024-11-03 06:24:45,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 06:24:45,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 06:24:45,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 06:24:45,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 06:24:45,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (1/1) ... [2024-11-03 06:24:45,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 06:24:45,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 06:24:46,010 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 06:24:46,014 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 06:24:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 06:24:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 06:24:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 06:24:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 06:24:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 06:24:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2024-11-03 06:24:46,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2024-11-03 06:24:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 06:24:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 06:24:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 06:24:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 06:24:46,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 06:24:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 06:24:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 06:24:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-03 06:24:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 06:24:46,147 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 06:24:46,149 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 06:24:46,420 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 06:24:46,420 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 06:24:46,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 06:24:46,437 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-03 06:24:46,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:24:46 BoogieIcfgContainer [2024-11-03 06:24:46,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 06:24:46,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 06:24:46,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 06:24:46,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 06:24:46,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:24:45" (1/3) ... [2024-11-03 06:24:46,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d90f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:24:46, skipping insertion in model container [2024-11-03 06:24:46,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:24:45" (2/3) ... [2024-11-03 06:24:46,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d90f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:24:46, skipping insertion in model container [2024-11-03 06:24:46,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:24:46" (3/3) ... [2024-11-03 06:24:46,448 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2024-11-03 06:24:46,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 06:24:46,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 06:24:46,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 06:24:46,537 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;@2a1f87b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 06:24:46,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 06:24:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-03 06:24:46,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:46,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:46,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:46,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash 624090286, now seen corresponding path program 1 times [2024-11-03 06:24:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605789522] [2024-11-03 06:24:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:46,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:46,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:46,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 06:24:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:46,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 06:24:46,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:46,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:46,747 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605789522] [2024-11-03 06:24:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [605789522] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 06:24:46,750 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 06:24:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 06:24:46,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311043874] [2024-11-03 06:24:46,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:46,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 06:24:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 06:24:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 06:24:46,785 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 06:24:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:46,804 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2024-11-03 06:24:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 06:24:46,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-03 06:24:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:46,814 INFO L225 Difference]: With dead ends: 51 [2024-11-03 06:24:46,815 INFO L226 Difference]: Without dead ends: 24 [2024-11-03 06:24:46,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 06:24:46,821 INFO L432 NwaCegarLoop]: 34 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, 34 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 06:24:46,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 06:24:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-03 06:24:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-03 06:24:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-03 06:24:46,857 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2024-11-03 06:24:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:46,857 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-03 06:24:46,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 06:24:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-03 06:24:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 06:24:46,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:46,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:46,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 06:24:47,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:47,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:47,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 181002929, now seen corresponding path program 1 times [2024-11-03 06:24:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68786938] [2024-11-03 06:24:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:47,065 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:47,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:47,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:47,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 06:24:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:47,133 WARN L253 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-03 06:24:47,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:47,317 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_6| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_6| (_ bv0 1))) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_6| (_ bv4 32)) |c_#length|) (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_6| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_6|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_6|) (_ bv0 32))))))) is different from true [2024-11-03 06:24:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:47,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:47,770 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68786938] [2024-11-03 06:24:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [68786938] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 06:24:47,770 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 06:24:47,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 4] imperfect sequences [] total 9 [2024-11-03 06:24:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232778984] [2024-11-03 06:24:47,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:47,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 06:24:47,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 06:24:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=42, Unknown=1, NotChecked=12, Total=72 [2024-11-03 06:24:47,776 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:47,926 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-03 06:24:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 06:24:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-11-03 06:24:47,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:47,931 INFO L225 Difference]: With dead ends: 39 [2024-11-03 06:24:47,931 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 06:24:47,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2024-11-03 06:24:47,933 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:47,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 133 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2024-11-03 06:24:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 06:24:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-03 06:24:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 06:24:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-11-03 06:24:47,947 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2024-11-03 06:24:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:47,948 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-11-03 06:24:47,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-11-03 06:24:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 06:24:47,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:47,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:47,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 06:24:48,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:48,151 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:48,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -248422138, now seen corresponding path program 1 times [2024-11-03 06:24:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144228775] [2024-11-03 06:24:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:48,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:48,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 06:24:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:48,226 WARN L253 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 06:24:48,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:48,310 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_14| (_ BitVec 32))) (and (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_14| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_14|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_14|) (_ bv0 32))))) (= (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_14| (_ bv0 1)) |c_#valid|) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_14| (_ bv4 32)) |c_#length|))) is different from true [2024-11-03 06:24:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:48,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:48,734 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144228775] [2024-11-03 06:24:48,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2144228775] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 06:24:48,735 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 06:24:48,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 5] imperfect sequences [] total 10 [2024-11-03 06:24:48,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979015161] [2024-11-03 06:24:48,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:48,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 06:24:48,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 06:24:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2024-11-03 06:24:48,738 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:48,837 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-03 06:24:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 06:24:48,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-03 06:24:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:48,839 INFO L225 Difference]: With dead ends: 31 [2024-11-03 06:24:48,839 INFO L226 Difference]: Without dead ends: 28 [2024-11-03 06:24:48,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2024-11-03 06:24:48,840 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:48,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 99 Unchecked, 0.1s Time] [2024-11-03 06:24:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-03 06:24:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-03 06:24:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 06:24:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-03 06:24:48,847 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 17 [2024-11-03 06:24:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:48,847 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-03 06:24:48,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-03 06:24:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 06:24:48,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:48,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:48,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 06:24:49,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:49,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:49,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1493632229, now seen corresponding path program 1 times [2024-11-03 06:24:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057469729] [2024-11-03 06:24:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:49,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:49,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 06:24:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:49,150 WARN L253 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-03 06:24:49,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:49,550 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-03 06:24:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:49,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 06:24:50,100 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:50,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057469729] [2024-11-03 06:24:50,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057469729] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 06:24:50,103 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 06:24:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2024-11-03 06:24:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172245535] [2024-11-03 06:24:50,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:50,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 06:24:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 06:24:50,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=76, Unknown=6, NotChecked=0, Total=110 [2024-11-03 06:24:50,105 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:50,633 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-11-03 06:24:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 06:24:50,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-03 06:24:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:50,635 INFO L225 Difference]: With dead ends: 56 [2024-11-03 06:24:50,635 INFO L226 Difference]: Without dead ends: 32 [2024-11-03 06:24:50,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=146, Unknown=9, NotChecked=0, Total=210 [2024-11-03 06:24:50,637 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:50,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 96 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 3 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 06:24:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-03 06:24:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-03 06:24:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-03 06:24:50,646 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 21 [2024-11-03 06:24:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:50,646 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-03 06:24:50,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-03 06:24:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 06:24:50,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:50,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:50,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 06:24:50,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:50,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:50,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1347694819, now seen corresponding path program 1 times [2024-11-03 06:24:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936490533] [2024-11-03 06:24:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:50,852 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:50,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:50,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 06:24:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:50,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 06:24:50,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:50,983 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_32| (_ BitVec 32))) (and (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_32| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_32|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_32|) (_ bv0 32))))) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_32| (_ bv4 32)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_32| (_ bv0 1))))) is different from true [2024-11-03 06:24:51,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:51,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 06:24:51,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:51,160 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_33| (_ BitVec 32))) (and (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_33| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_33|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_33|) (_ bv0 32))))) (= |c_#valid| (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_33| (_ bv0 1))) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_33| (_ bv4 32)) |c_#length|))) is different from true [2024-11-03 06:24:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-03 06:24:51,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 06:24:51,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936490533] [2024-11-03 06:24:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [936490533] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 06:24:51,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 06:24:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-03 06:24:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695415185] [2024-11-03 06:24:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:51,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 06:24:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 06:24:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=56, Unknown=2, NotChecked=30, Total=110 [2024-11-03 06:24:51,951 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:51,975 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-03 06:24:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 06:24:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-03 06:24:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:51,976 INFO L225 Difference]: With dead ends: 42 [2024-11-03 06:24:51,976 INFO L226 Difference]: Without dead ends: 33 [2024-11-03 06:24:51,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=56, Unknown=2, NotChecked=30, Total=110 [2024-11-03 06:24:51,977 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:51,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 06:24:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-03 06:24:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-03 06:24:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 06:24:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-03 06:24:51,989 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 26 [2024-11-03 06:24:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:51,989 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-03 06:24:51,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-03 06:24:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 06:24:51,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:51,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:51,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 06:24:52,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:52,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:52,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2027753189, now seen corresponding path program 1 times [2024-11-03 06:24:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759949342] [2024-11-03 06:24:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:52,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:52,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:52,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 06:24:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:52,300 WARN L253 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-03 06:24:52,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:52,363 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_49| (_ BitVec 32))) (and (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_49| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_49|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_49|) (_ bv0 32))))) (= |c_#length| (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_49| (_ bv4 32))) (= (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_49| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-03 06:24:52,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:52,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:52,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 06:24:52,531 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_50| (_ BitVec 32))) (and (= (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_50| (_ bv0 1)) |c_#valid|) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_50| (_ bv4 32)) |c_#length|) (= |c_#memory_int#2| (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_50| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_50|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_50|) (_ bv0 32))))))) is different from true [2024-11-03 06:24:52,635 INFO L349 Elim1Store]: treesize reduction 15, result has 31.8 percent of original size [2024-11-03 06:24:52,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2024-11-03 06:24:52,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 06:24:52,661 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-03 06:24:52,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-03 06:24:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-03 06:24:52,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 06:24:53,694 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759949342] [2024-11-03 06:24:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759949342] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 06:24:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 06:24:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2024-11-03 06:24:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252218913] [2024-11-03 06:24:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:53,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 06:24:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 06:24:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=236, Unknown=2, NotChecked=62, Total=342 [2024-11-03 06:24:53,696 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:53,910 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-03 06:24:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 06:24:53,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-03 06:24:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:53,911 INFO L225 Difference]: With dead ends: 42 [2024-11-03 06:24:53,911 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 06:24:53,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=298, Unknown=2, NotChecked=70, Total=420 [2024-11-03 06:24:53,913 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:53,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 169 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 06:24:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 06:24:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 06:24:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 06:24:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-11-03 06:24:53,923 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2024-11-03 06:24:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:53,923 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-11-03 06:24:53,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-11-03 06:24:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-03 06:24:53,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 06:24:53,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:53,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 06:24:54,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:54,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 06:24:54,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 06:24:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -457128090, now seen corresponding path program 1 times [2024-11-03 06:24:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 06:24:54,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585990147] [2024-11-03 06:24:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 06:24:54,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:54,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 06:24:54,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 06:24:54,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 06:24:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 06:24:54,249 WARN L253 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-03 06:24:54,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 06:24:54,316 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_66| (_ BitVec 32))) (and (= (store |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_66| (store (select |c_old(#memory_int#2)| |v___fpclassify_float_~#gf_u~0.base_66|) (_ bv0 32) (select (select |c_#memory_int#2| |v___fpclassify_float_~#gf_u~0.base_66|) (_ bv0 32)))) |c_#memory_int#2|) (= (store |c_old(#length)| |v___fpclassify_float_~#gf_u~0.base_66| (_ bv4 32)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |v___fpclassify_float_~#gf_u~0.base_66| (_ bv0 1))))) is different from true [2024-11-03 06:24:54,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:54,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 06:24:54,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-03 06:24:54,795 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-03 06:24:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-03 06:24:54,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 06:24:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 06:24:55,479 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 06:24:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585990147] [2024-11-03 06:24:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [585990147] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 06:24:55,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 06:24:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-03 06:24:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519323187] [2024-11-03 06:24:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 06:24:55,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 06:24:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 06:24:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 06:24:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=121, Unknown=3, NotChecked=22, Total=182 [2024-11-03 06:24:55,481 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 06:24:55,586 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2024-11-03 06:24:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 06:24:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-11-03 06:24:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 06:24:55,591 INFO L225 Difference]: With dead ends: 30 [2024-11-03 06:24:55,591 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 06:24:55,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2024-11-03 06:24:55,592 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 06:24:55,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 06:24:55,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 06:24:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 06:24:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 06:24:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 06:24:55,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2024-11-03 06:24:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 06:24:55,594 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 06:24:55,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 06:24:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 06:24:55,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 06:24:55,597 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 06:24:55,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 06:24:55,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 06:24:55,801 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-03 06:24:55,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 06:24:56,391 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 06:24:56,401 WARN L156 FloydHoareUtils]: Requires clause for __fpclassify_float contained old-variable. Original clause: (and (= |old(#valid)| |#valid|) (= |old(#memory_int#2)| |#memory_int#2|) (= |#length| |old(#length)|)) Eliminated clause: true [2024-11-03 06:24:56,418 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,418 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,419 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,420 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,421 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,421 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 06:24:56,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 06:24:56 BoogieIcfgContainer [2024-11-03 06:24:56,424 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 06:24:56,424 INFO L158 Benchmark]: Toolchain (without parser) took 10851.88ms. Allocated memory was 341.8MB in the beginning and 455.1MB in the end (delta: 113.2MB). Free memory was 293.5MB in the beginning and 226.4MB in the end (delta: 67.1MB). Peak memory consumption was 180.8MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,424 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 199.2MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 06:24:56,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.10ms. Allocated memory is still 341.8MB. Free memory was 293.0MB in the beginning and 279.8MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.90ms. Allocated memory is still 341.8MB. Free memory was 279.8MB in the beginning and 278.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,425 INFO L158 Benchmark]: Boogie Preprocessor took 49.65ms. Allocated memory is still 341.8MB. Free memory was 278.2MB in the beginning and 275.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,425 INFO L158 Benchmark]: RCFGBuilder took 469.68ms. Allocated memory is still 341.8MB. Free memory was 275.6MB in the beginning and 260.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,426 INFO L158 Benchmark]: TraceAbstraction took 9983.13ms. Allocated memory was 341.8MB in the beginning and 455.1MB in the end (delta: 113.2MB). Free memory was 259.9MB in the beginning and 226.4MB in the end (delta: 33.5MB). Peak memory consumption was 147.2MB. Max. memory is 8.0GB. [2024-11-03 06:24:56,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 199.2MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 303.10ms. Allocated memory is still 341.8MB. Free memory was 293.0MB in the beginning and 279.8MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.90ms. Allocated memory is still 341.8MB. Free memory was 279.8MB in the beginning and 278.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.65ms. Allocated memory is still 341.8MB. Free memory was 278.2MB in the beginning and 275.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 469.68ms. Allocated memory is still 341.8MB. Free memory was 275.6MB in the beginning and 260.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 9983.13ms. Allocated memory was 341.8MB in the beginning and 455.1MB in the end (delta: 113.2MB). Free memory was 259.9MB in the beginning and 226.4MB in the end (delta: 33.5MB). Peak memory consumption was 147.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 647 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 152 IncrementalHoareTripleChecker+Unchecked, 480 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 167 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 211 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, InterpolantAutomatonStates: 49, 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 278 ConstructedInterpolants, 82 QuantifiedInterpolants, 3025 SizeOfPredicates, 60 NumberOfNonLiveVariables, 516 ConjunctsInSsa, 266 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 28/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-03 06:24:56,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...