/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:33:51,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:33:51,154 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 12:33:51,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:33:51,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:33:51,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:33:51,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:33:51,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:33:51,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:33:51,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:33:51,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:33:51,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:33:51,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:33:51,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:33:51,185 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:33:51,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:33:51,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:33:51,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:33:51,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:33:51,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:33:51,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:33:51,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:33:51,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:33:51,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:33:51,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:33:51,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:33:51,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:33:51,189 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:33:51,189 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:33:51,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:33:51,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:33:51,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:33:51,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:33:51,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:33:51,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:33:51,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:33:51,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:33:51,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:33:51,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:33:51,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-53.i [2024-11-03 12:33:52,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:33:52,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:33:52,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-53.i [2024-11-03 12:33:52,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6b0f228/663c2da28a104625a49edaaeeb71e37c/FLAG891bc4f51 [2024-11-03 12:33:52,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6b0f228/663c2da28a104625a49edaaeeb71e37c [2024-11-03 12:33:52,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:33:52,852 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:33:52,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:33:52,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:33:52,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:33:52,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:33:52" (1/1) ... [2024-11-03 12:33:52,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cac503d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:52, skipping insertion in model container [2024-11-03 12:33:52,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:33:52" (1/1) ... [2024-11-03 12:33:52,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:33:53,001 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-53.i[916,929] [2024-11-03 12:33:53,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:33:53,074 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:33:53,082 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-53.i[916,929] [2024-11-03 12:33:53,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:33:53,129 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:33:53,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53 WrapperNode [2024-11-03 12:33:53,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:33:53,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:33:53,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:33:53,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:33:53,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,172 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 193 [2024-11-03 12:33:53,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:33:53,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:33:53,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:33:53,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:33:53,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,198 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 12:33:53,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:33:53,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:33:53,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:33:53,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:33:53,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (1/1) ... [2024-11-03 12:33:53,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:33:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:33:53,247 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 12:33:53,249 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 12:33:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:33:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:33:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:33:53,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:33:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:33:53,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:33:53,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:33:53,356 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:34:03,551 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-03 12:34:03,551 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:34:03,577 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:34:03,577 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:34:03,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:34:03 BoogieIcfgContainer [2024-11-03 12:34:03,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:34:03,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:34:03,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:34:03,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:34:03,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:33:52" (1/3) ... [2024-11-03 12:34:03,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458a9a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:34:03, skipping insertion in model container [2024-11-03 12:34:03,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:33:53" (2/3) ... [2024-11-03 12:34:03,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458a9a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:34:03, skipping insertion in model container [2024-11-03 12:34:03,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:34:03" (3/3) ... [2024-11-03 12:34:03,584 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-53.i [2024-11-03 12:34:03,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:34:03,597 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:34:03,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:34:03,657 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;@90cd000, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:34:03,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:34:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-03 12:34:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-03 12:34:03,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:34:03,674 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:03,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:34:03,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:34:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash 244620392, now seen corresponding path program 1 times [2024-11-03 12:34:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:34:03,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917631494] [2024-11-03 12:34:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:34:03,687 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:34:03,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:03,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:34:03,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:34:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:34:03,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:34:03,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:34:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-03 12:34:03,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:34:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-03 12:34:05,602 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:34:05,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917631494] [2024-11-03 12:34:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [917631494] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:34:05,603 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:34:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:34:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479147647] [2024-11-03 12:34:05,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:34:05,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:34:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:34:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:34:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:34:05,623 INFO L87 Difference]: Start difference. First operand has 84 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-03 12:34:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:34:05,642 INFO L93 Difference]: Finished difference Result 161 states and 279 transitions. [2024-11-03 12:34:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:34:05,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 166 [2024-11-03 12:34:05,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:34:05,648 INFO L225 Difference]: With dead ends: 161 [2024-11-03 12:34:05,648 INFO L226 Difference]: Without dead ends: 80 [2024-11-03 12:34:05,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 330 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 12:34:05,652 INFO L432 NwaCegarLoop]: 123 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, 123 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 12:34:05,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:34:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-03 12:34:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-03 12:34:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 53 states have internal predecessors, (73), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-03 12:34:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 123 transitions. [2024-11-03 12:34:05,689 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 123 transitions. Word has length 166 [2024-11-03 12:34:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:34:05,689 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 123 transitions. [2024-11-03 12:34:05,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-03 12:34:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2024-11-03 12:34:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-03 12:34:05,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:34:05,692 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:05,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 12:34:05,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:05,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:34:05,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:34:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1412158622, now seen corresponding path program 1 times [2024-11-03 12:34:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:34:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183450256] [2024-11-03 12:34:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:34:05,895 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:34:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:05,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:34:05,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:34:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:34:05,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:34:06,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:34:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-03 12:34:06,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:34:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-03 12:34:08,792 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:34:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183450256] [2024-11-03 12:34:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [183450256] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:34:08,792 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:34:08,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 12:34:08,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122036856] [2024-11-03 12:34:08,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:34:08,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:34:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:34:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:34:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:34:08,796 INFO L87 Difference]: Start difference. First operand 80 states and 123 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-03 12:34:13,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:17,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:21,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:25,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:29,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:33,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:34:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:34:33,687 INFO L93 Difference]: Finished difference Result 194 states and 296 transitions. [2024-11-03 12:34:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:34:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 166 [2024-11-03 12:34:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:34:33,840 INFO L225 Difference]: With dead ends: 194 [2024-11-03 12:34:33,841 INFO L226 Difference]: Without dead ends: 117 [2024-11-03 12:34:33,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:34:33,844 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 47 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-03 12:34:33,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 348 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 24.7s Time] [2024-11-03 12:34:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-03 12:34:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-03 12:34:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-03 12:34:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 172 transitions. [2024-11-03 12:34:33,864 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 172 transitions. Word has length 166 [2024-11-03 12:34:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:34:33,864 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 172 transitions. [2024-11-03 12:34:33,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-03 12:34:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 172 transitions. [2024-11-03 12:34:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-03 12:34:33,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:34:33,867 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:33,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:34:34,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:34,068 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:34:34,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:34:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1410311580, now seen corresponding path program 1 times [2024-11-03 12:34:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:34:34,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284780202] [2024-11-03 12:34:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:34:34,070 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:34:34,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:34,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:34:34,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:34:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:34:34,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 12:34:34,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:34:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 332 proven. 177 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2024-11-03 12:34:56,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:35:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 12 proven. 129 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2024-11-03 12:35:13,137 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:35:13,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284780202] [2024-11-03 12:35:13,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [284780202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:35:13,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:35:13,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-03 12:35:13,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665351654] [2024-11-03 12:35:13,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:35:13,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 12:35:13,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:35:13,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 12:35:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-11-03 12:35:13,140 INFO L87 Difference]: Start difference. First operand 113 states and 172 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (50), 5 states have call predecessors, (50), 9 states have return successors, (50), 8 states have call predecessors, (50), 8 states have call successors, (50) [2024-11-03 12:35:31,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 12:35:35,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 12:35:38,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]