/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_amount10_file-76.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:44:28,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:44:28,187 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 12:44:28,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:44:28,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:44:28,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:44:28,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:44:28,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:44:28,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:44:28,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:44:28,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:44:28,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:44:28,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:44:28,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:44:28,224 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:44:28,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:44:28,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:44:28,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:44:28,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:44:28,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:44:28,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:44:28,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:44:28,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:44:28,232 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:44:28,232 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:44:28,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:44:28,232 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:44:28,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:44:28,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:44:28,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:44:28,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:44:28,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:44:28,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:44:28,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:44:28,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:44:28,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:44:28,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:44:28,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:44:28,235 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:44:28,236 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:44:28,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:44:28,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:44:28,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:44:28,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:44:28,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:44:28,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:44:28,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:44:28,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:44:28,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:44:28,478 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:44:28,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2024-11-03 12:44:29,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:44:30,025 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:44:30,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2024-11-03 12:44:30,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0de5fb37/2afb9a23171e47308d3901bfa41a4c77/FLAG2a1b53f67 [2024-11-03 12:44:30,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0de5fb37/2afb9a23171e47308d3901bfa41a4c77 [2024-11-03 12:44:30,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:44:30,430 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:44:30,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:44:30,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:44:30,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:44:30,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdaeec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30, skipping insertion in model container [2024-11-03 12:44:30,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,464 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:44:30,609 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_amount10_file-76.i[915,928] [2024-11-03 12:44:30,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:44:30,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:44:30,672 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_amount10_file-76.i[915,928] [2024-11-03 12:44:30,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:44:30,703 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:44:30,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30 WrapperNode [2024-11-03 12:44:30,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:44:30,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:44:30,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:44:30,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:44:30,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,736 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2024-11-03 12:44:30,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:44:30,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:44:30,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:44:30,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:44:30,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,761 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 12:44:30,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:44:30,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:44:30,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:44:30,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:44:30,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (1/1) ... [2024-11-03 12:44:30,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:44:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:44:30,813 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 12:44:30,815 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 12:44:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:44:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:44:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:44:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:44:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:44:30,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:44:30,925 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:44:30,933 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:44:31,781 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-03 12:44:31,781 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:44:31,792 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:44:31,794 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:44:31,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:44:31 BoogieIcfgContainer [2024-11-03 12:44:31,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:44:31,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:44:31,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:44:31,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:44:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:44:30" (1/3) ... [2024-11-03 12:44:31,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69231949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:44:31, skipping insertion in model container [2024-11-03 12:44:31,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:44:30" (2/3) ... [2024-11-03 12:44:31,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69231949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:44:31, skipping insertion in model container [2024-11-03 12:44:31,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:44:31" (3/3) ... [2024-11-03 12:44:31,802 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-76.i [2024-11-03 12:44:31,816 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:44:31,817 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:44:31,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:44:31,871 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;@199be147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:44:31,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:44:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 12:44:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 12:44:31,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:44:31,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 12:44:31,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:44:31,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:44:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash -621472132, now seen corresponding path program 1 times [2024-11-03 12:44:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:44:31,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972645304] [2024-11-03 12:44:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:44:31,897 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:44:31,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:31,899 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 12:44:31,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:44:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:44:32,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:44:32,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:44:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 12:44:32,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:44:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 12:44:32,115 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:44:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972645304] [2024-11-03 12:44:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [972645304] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:44:32,116 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:44:32,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:44:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71678638] [2024-11-03 12:44:32,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:44:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:44:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:44:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:44:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:44:32,151 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-03 12:44:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:44:32,170 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2024-11-03 12:44:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:44:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 52 [2024-11-03 12:44:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:44:32,179 INFO L225 Difference]: With dead ends: 61 [2024-11-03 12:44:32,180 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 12:44:32,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 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 12:44:32,186 INFO L432 NwaCegarLoop]: 38 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, 38 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 12:44:32,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:44:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 12:44:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 12:44:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 12:44:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-11-03 12:44:32,221 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 52 [2024-11-03 12:44:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:44:32,222 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-03 12:44:32,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-03 12:44:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-11-03 12:44:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 12:44:32,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:44:32,227 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 12:44:32,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:44:32,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:32,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:44:32,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:44:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 176339458, now seen corresponding path program 1 times [2024-11-03 12:44:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:44:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078909435] [2024-11-03 12:44:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:44:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:44:32,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:32,432 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 12:44:32,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:44:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:44:32,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:44:32,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:44:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 12:44:32,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:44:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 12:44:32,828 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:44:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078909435] [2024-11-03 12:44:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1078909435] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:44:32,829 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:44:32,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 12:44:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770149623] [2024-11-03 12:44:32,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:44:32,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:44:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:44:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:44:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:44:32,832 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-03 12:44:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:44:33,022 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2024-11-03 12:44:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 12:44:33,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 52 [2024-11-03 12:44:33,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:44:33,032 INFO L225 Difference]: With dead ends: 57 [2024-11-03 12:44:33,032 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 12:44:33,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:44:33,034 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 12:44:33,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 12:44:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 12:44:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 12:44:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 12:44:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-03 12:44:33,046 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 52 [2024-11-03 12:44:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:44:33,048 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-03 12:44:33,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-03 12:44:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-03 12:44:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 12:44:33,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:44:33,050 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 12:44:33,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 12:44:33,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:33,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:44:33,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:44:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 233597760, now seen corresponding path program 1 times [2024-11-03 12:44:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:44:33,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267436602] [2024-11-03 12:44:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:44:33,253 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:44:33,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:33,254 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 12:44:33,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:44:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:44:33,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 12:44:33,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:44:55,185 WARN L286 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 12:45:27,979 WARN L286 SmtUtils]: Spent 10.73s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 12:45:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 12:45:39,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:46:08,687 WARN L286 SmtUtils]: Spent 8.83s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)