/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:03:29,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:03:29,356 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 01:03:29,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:03:29,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:03:29,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:03:29,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:03:29,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:03:29,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:03:29,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:03:29,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:03:29,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:03:29,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:03:29,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:03:29,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:03:29,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:03:29,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:03:29,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:03:29,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:03:29,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:03:29,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:03:29,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:03:29,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:03:29,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:03:29,399 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:03:29,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:03:29,399 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:03:29,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:03:29,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:03:29,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:03:29,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:03:29,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:03:29,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:03:29,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:03:29,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:03:29,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:03:29,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:03:29,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:03:29,402 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:03:29,402 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:29,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:03:29,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:03:29,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:03:29,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:03:29,403 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:29,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:03:29,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:03:29,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:03:29,638 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:03:29,639 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:03:29,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i [2024-11-03 01:03:31,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:03:31,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:03:31,241 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i [2024-11-03 01:03:31,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29f9f87/45a85ae875b14ee4ada46c50518e411c/FLAG4a4d31c57 [2024-11-03 01:03:31,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29f9f87/45a85ae875b14ee4ada46c50518e411c [2024-11-03 01:03:31,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:03:31,594 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:03:31,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:03:31,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:03:31,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:03:31,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:31,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87a6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31, skipping insertion in model container [2024-11-03 01:03:31,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:31,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:03:31,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i[916,929] [2024-11-03 01:03:31,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:03:31,894 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:03:31,904 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i[916,929] [2024-11-03 01:03:31,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:03:31,959 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:03:31,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31 WrapperNode [2024-11-03 01:03:31,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:03:31,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:03:31,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:03:31,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:03:31,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:31,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,007 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2024-11-03 01:03:32,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:03:32,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:03:32,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:03:32,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:03:32,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,049 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 01:03:32,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:03:32,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:03:32,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:03:32,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:03:32,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (1/1) ... [2024-11-03 01:03:32,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:03:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:03:32,120 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 01:03:32,123 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 01:03:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:03:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:03:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:03:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:03:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:03:32,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:03:32,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:03:32,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:03:38,369 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 01:03:38,370 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:03:38,384 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:03:38,384 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:03:38,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:03:38 BoogieIcfgContainer [2024-11-03 01:03:38,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:03:38,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:03:38,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:03:38,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:03:38,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:03:31" (1/3) ... [2024-11-03 01:03:38,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75025847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:03:38, skipping insertion in model container [2024-11-03 01:03:38,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:31" (2/3) ... [2024-11-03 01:03:38,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75025847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:03:38, skipping insertion in model container [2024-11-03 01:03:38,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:03:38" (3/3) ... [2024-11-03 01:03:38,395 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-82.i [2024-11-03 01:03:38,411 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:03:38,412 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:03:38,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:03:38,482 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;@46cfb19e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:03:38,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:03:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 60 states have internal predecessors, (82), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-03 01:03:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-03 01:03:38,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:03:38,499 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:03:38,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:03:38,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:03:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1826903065, now seen corresponding path program 1 times [2024-11-03 01:03:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:03:38,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126343081] [2024-11-03 01:03:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:03:38,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:03:38,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:03:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:03:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:03:39,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:03:39,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:03:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-03 01:03:39,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:03:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-03 01:03:40,352 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:03:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126343081] [2024-11-03 01:03:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1126343081] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:03:40,353 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:03:40,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:03:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547697226] [2024-11-03 01:03:40,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:03:40,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:03:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:03:40,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:03:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:03:40,385 INFO L87 Difference]: Start difference. First operand has 93 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 60 states have internal predecessors, (82), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:03:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:03:40,428 INFO L93 Difference]: Finished difference Result 179 states and 313 transitions. [2024-11-03 01:03:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:03:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-03 01:03:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:03:40,444 INFO L225 Difference]: With dead ends: 179 [2024-11-03 01:03:40,444 INFO L226 Difference]: Without dead ends: 89 [2024-11-03 01:03:40,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 402 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 01:03:40,453 INFO L432 NwaCegarLoop]: 137 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, 137 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 01:03:40,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:03:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-03 01:03:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-03 01:03:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-03 01:03:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 137 transitions. [2024-11-03 01:03:40,513 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 137 transitions. Word has length 202 [2024-11-03 01:03:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:03:40,514 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 137 transitions. [2024-11-03 01:03:40,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:03:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 137 transitions. [2024-11-03 01:03:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-03 01:03:40,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:03:40,522 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:03:40,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 01:03:40,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:40,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:03:40,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:03:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash -550393749, now seen corresponding path program 1 times [2024-11-03 01:03:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:03:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660651] [2024-11-03 01:03:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:03:40,726 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:40,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:03:40,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:03:40,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:03:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:03:41,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:03:41,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:03:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 01:03:41,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:03:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 01:03:42,635 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:03:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660651] [2024-11-03 01:03:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1660651] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:03:42,636 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:03:42,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 01:03:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025618260] [2024-11-03 01:03:42,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:03:42,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:03:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:03:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:03:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:03:42,643 INFO L87 Difference]: Start difference. First operand 89 states and 137 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:03:46,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:03:50,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:03:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:03:51,336 INFO L93 Difference]: Finished difference Result 259 states and 401 transitions. [2024-11-03 01:03:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:03:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-03 01:03:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:03:51,341 INFO L225 Difference]: With dead ends: 259 [2024-11-03 01:03:51,341 INFO L226 Difference]: Without dead ends: 173 [2024-11-03 01:03:51,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:03:51,344 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 124 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-03 01:03:51,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 358 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-11-03 01:03:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-03 01:03:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-03 01:03:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.320754716981132) internal successors, (140), 106 states have internal predecessors, (140), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-03 01:03:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 264 transitions. [2024-11-03 01:03:51,371 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 264 transitions. Word has length 202 [2024-11-03 01:03:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:03:51,372 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 264 transitions. [2024-11-03 01:03:51,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:03:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 264 transitions. [2024-11-03 01:03:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-03 01:03:51,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:03:51,376 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:03:51,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 01:03:51,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:51,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:03:51,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:03:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1713619070, now seen corresponding path program 1 times [2024-11-03 01:03:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:03:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432477666] [2024-11-03 01:03:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:03:51,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:03:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:03:51,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:03:51,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:03:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:03:52,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:03:52,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:03:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 01:03:52,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:03:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 01:03:53,743 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:03:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432477666] [2024-11-03 01:03:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432477666] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:03:53,743 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:03:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 01:03:53,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528507576] [2024-11-03 01:03:53,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:03:53,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 01:03:53,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:03:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 01:03:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:03:53,746 INFO L87 Difference]: Start difference. First operand 171 states and 264 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:03:59,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:03,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:07,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:11,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:15,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:04:15,267 INFO L93 Difference]: Finished difference Result 347 states and 536 transitions. [2024-11-03 01:04:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:04:15,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-03 01:04:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:04:15,270 INFO L225 Difference]: With dead ends: 347 [2024-11-03 01:04:15,270 INFO L226 Difference]: Without dead ends: 178 [2024-11-03 01:04:15,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:04:15,273 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 186 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 69 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-11-03 01:04:15,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 327 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 84 Invalid, 5 Unknown, 0 Unchecked, 21.4s Time] [2024-11-03 01:04:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-03 01:04:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2024-11-03 01:04:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-03 01:04:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 269 transitions. [2024-11-03 01:04:15,296 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 269 transitions. Word has length 203 [2024-11-03 01:04:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:04:15,297 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 269 transitions. [2024-11-03 01:04:15,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 01:04:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 269 transitions. [2024-11-03 01:04:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-03 01:04:15,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:04:15,300 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:04:15,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 01:04:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:15,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:04:15,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:04:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1262533977, now seen corresponding path program 1 times [2024-11-03 01:04:15,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:04:15,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963843526] [2024-11-03 01:04:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:04:15,503 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:15,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:04:15,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:04:15,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:04:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:04:17,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:04:17,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:04:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 828 proven. 27 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2024-11-03 01:04:18,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:04:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-03 01:04:20,919 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:04:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963843526] [2024-11-03 01:04:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963843526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:04:20,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:04:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 01:04:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914819746] [2024-11-03 01:04:20,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:04:20,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 01:04:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:04:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 01:04:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 01:04:20,922 INFO L87 Difference]: Start difference. First operand 176 states and 269 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-03 01:04:27,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:31,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:35,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:04:35,140 INFO L93 Difference]: Finished difference Result 361 states and 545 transitions. [2024-11-03 01:04:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 01:04:35,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 203 [2024-11-03 01:04:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:04:35,215 INFO L225 Difference]: With dead ends: 361 [2024-11-03 01:04:35,215 INFO L226 Difference]: Without dead ends: 188 [2024-11-03 01:04:35,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 01:04:35,217 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 79 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:04:35,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 232 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2024-11-03 01:04:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-03 01:04:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2024-11-03 01:04:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.2735042735042734) internal successors, (149), 117 states have internal predecessors, (149), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-03 01:04:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 273 transitions. [2024-11-03 01:04:35,249 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 273 transitions. Word has length 203 [2024-11-03 01:04:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:04:35,249 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 273 transitions. [2024-11-03 01:04:35,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-03 01:04:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 273 transitions. [2024-11-03 01:04:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-03 01:04:35,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:04:35,252 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:04:35,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 01:04:35,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:35,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:04:35,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:04:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash -587203520, now seen corresponding path program 1 times [2024-11-03 01:04:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:04:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753494978] [2024-11-03 01:04:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:04:35,454 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:04:35,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:04:35,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 01:04:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:04:37,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 01:04:37,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:04:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1004 proven. 87 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-11-03 01:04:45,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:04:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 255 proven. 87 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2024-11-03 01:04:52,435 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:04:52,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753494978] [2024-11-03 01:04:52,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [753494978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:04:52,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:04:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2024-11-03 01:04:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385122427] [2024-11-03 01:04:52,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:04:52,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-03 01:04:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:04:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-03 01:04:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2024-11-03 01:04:52,438 INFO L87 Difference]: Start difference. First operand 184 states and 273 transitions. Second operand has 30 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 9 states have call successors, (42), 6 states have call predecessors, (42), 12 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) [2024-11-03 01:05:03,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []