/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/float-newlib/double_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 14:05:30,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 14:05:30,479 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 14:05:30,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 14:05:30,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 14:05:30,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 14:05:30,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 14:05:30,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 14:05:30,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 14:05:30,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 14:05:30,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 14:05:30,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 14:05:30,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 14:05:30,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 14:05:30,511 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 14:05:30,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 14:05:30,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 14:05:30,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 14:05:30,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 14:05:30,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 14:05:30,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 14:05:30,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 14:05:30,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 14:05:30,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 14:05:30,515 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 14:05:30,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 14:05:30,516 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 14:05:30,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 14:05:30,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 14:05:30,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 14:05:30,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 14:05:30,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 14:05:30,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 14:05:30,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 14:05:30,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:05:30,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 14:05:30,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 14:05:30,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 14:05:30,518 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 14:05:30,518 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 14:05:30,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 14:05:30,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 14:05:30,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 14:05:30,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 14:05:30,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 14:05:30,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 14:05:30,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 14:05:30,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 14:05:30,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 14:05:30,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 14:05:30,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2024-11-03 14:05:32,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 14:05:32,190 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 14:05:32,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2024-11-03 14:05:32,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56931c017/22b61309820548b38dfa0efe32655444/FLAG5f904e68b [2024-11-03 14:05:32,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56931c017/22b61309820548b38dfa0efe32655444 [2024-11-03 14:05:32,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 14:05:32,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 14:05:32,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 14:05:32,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 14:05:32,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 14:05:32,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e7f6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32, skipping insertion in model container [2024-11-03 14:05:32,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 14:05:32,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c[2259,2272] [2024-11-03 14:05:32,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:05:32,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 14:05:32,819 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c[2259,2272] [2024-11-03 14:05:32,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:05:32,835 INFO L204 MainTranslator]: Completed translation [2024-11-03 14:05:32,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32 WrapperNode [2024-11-03 14:05:32,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 14:05:32,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 14:05:32,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 14:05:32,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 14:05:32,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,862 INFO L138 Inliner]: procedures = 19, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2024-11-03 14:05:32,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 14:05:32,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 14:05:32,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 14:05:32,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 14:05:32,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,915 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 3, 3]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 2]. [2024-11-03 14:05:32,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 14:05:32,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 14:05:32,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 14:05:32,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 14:05:32,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (1/1) ... [2024-11-03 14:05:32,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:05:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 14:05:32,994 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 14:05:32,996 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 14:05:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 14:05:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-03 14:05:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-03 14:05:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-03 14:05:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 14:05:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 14:05:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-03 14:05:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-03 14:05:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 14:05:33,099 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 14:05:33,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 14:05:34,028 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-03 14:05:34,028 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 14:05:34,039 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 14:05:34,040 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-03 14:05:34,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:34 BoogieIcfgContainer [2024-11-03 14:05:34,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 14:05:34,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 14:05:34,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 14:05:34,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 14:05:34,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:05:32" (1/3) ... [2024-11-03 14:05:34,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16891df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:34, skipping insertion in model container [2024-11-03 14:05:34,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:32" (2/3) ... [2024-11-03 14:05:34,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16891df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:05:34, skipping insertion in model container [2024-11-03 14:05:34,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:05:34" (3/3) ... [2024-11-03 14:05:34,046 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052d.c [2024-11-03 14:05:34,058 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 14:05:34,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 14:05:34,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 14:05:34,106 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;@47539029, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 14:05:34,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 14:05:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-03 14:05:34,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:34,115 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:34,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:34,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2024-11-03 14:05:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:34,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626840907] [2024-11-03 14:05:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:34,127 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:34,130 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 14:05:34,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 14:05:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:34,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 14:05:34,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:34,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:34,196 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626840907] [2024-11-03 14:05:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [626840907] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:34,197 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 14:05:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013088997] [2024-11-03 14:05:34,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:34,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 14:05:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 14:05:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 14:05:34,226 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:34,238 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2024-11-03 14:05:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 14:05:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-03 14:05:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:34,246 INFO L225 Difference]: With dead ends: 74 [2024-11-03 14:05:34,246 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 14:05:34,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 14:05:34,251 INFO L432 NwaCegarLoop]: 53 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, 53 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 14:05:34,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:05:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 14:05:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 14:05:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2024-11-03 14:05:34,275 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2024-11-03 14:05:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:34,275 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2024-11-03 14:05:34,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2024-11-03 14:05:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 14:05:34,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:34,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:34,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 14:05:34,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:34,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:34,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2024-11-03 14:05:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347948789] [2024-11-03 14:05:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:34,482 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 14:05:34,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 14:05:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:34,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 14:05:34,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:34,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:34,608 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347948789] [2024-11-03 14:05:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1347948789] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:34,608 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 14:05:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890496073] [2024-11-03 14:05:34,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:34,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 14:05:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 14:05:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 14:05:34,610 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:35,048 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2024-11-03 14:05:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 14:05:35,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 14:05:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:35,050 INFO L225 Difference]: With dead ends: 40 [2024-11-03 14:05:35,050 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 14:05:35,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 14:05:35,051 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 54 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 14:05:35,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 149 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 14:05:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 14:05:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-03 14:05:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2024-11-03 14:05:35,055 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 12 [2024-11-03 14:05:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:35,055 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2024-11-03 14:05:35,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2024-11-03 14:05:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-03 14:05:35,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:35,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:35,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 14:05:35,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:35,257 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:35,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2024-11-03 14:05:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258756137] [2024-11-03 14:05:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:35,258 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:35,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:35,259 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 14:05:35,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 14:05:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:35,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 14:05:35,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:35,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:37,567 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:37,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258756137] [2024-11-03 14:05:37,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1258756137] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:37,567 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:37,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2024-11-03 14:05:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942549637] [2024-11-03 14:05:37,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:37,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 14:05:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 14:05:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:05:37,570 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:38,687 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-11-03 14:05:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 14:05:38,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-03 14:05:38,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:38,693 INFO L225 Difference]: With dead ends: 49 [2024-11-03 14:05:38,693 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 14:05:38,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:05:38,695 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 88 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-03 14:05:38,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-03 14:05:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 14:05:38,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-03 14:05:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2024-11-03 14:05:38,698 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 15 [2024-11-03 14:05:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:38,698 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2024-11-03 14:05:38,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-03 14:05:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-03 14:05:38,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:38,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:38,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 14:05:38,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:38,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:38,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1381924140, now seen corresponding path program 1 times [2024-11-03 14:05:38,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:38,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133756560] [2024-11-03 14:05:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:38,902 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:38,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:38,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:05:38,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 14:05:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:38,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 14:05:38,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:39,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:39,114 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133756560] [2024-11-03 14:05:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2133756560] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:39,115 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:39,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2024-11-03 14:05:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237047808] [2024-11-03 14:05:39,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:39,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 14:05:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 14:05:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-03 14:05:39,116 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:39,314 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2024-11-03 14:05:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 14:05:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-03 14:05:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:39,315 INFO L225 Difference]: With dead ends: 50 [2024-11-03 14:05:39,315 INFO L226 Difference]: Without dead ends: 28 [2024-11-03 14:05:39,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-03 14:05:39,316 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:05:39,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 80 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 14:05:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-03 14:05:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-11-03 14:05:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-03 14:05:39,320 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2024-11-03 14:05:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:39,320 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-03 14:05:39,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-03 14:05:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-03 14:05:39,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:39,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:39,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 14:05:39,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:39,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:39,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2100684777, now seen corresponding path program 1 times [2024-11-03 14:05:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529416168] [2024-11-03 14:05:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:39,525 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:39,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:39,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:05:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 14:05:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:39,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 14:05:39,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:39,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:39,798 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529416168] [2024-11-03 14:05:39,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1529416168] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:39,799 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:39,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-03 14:05:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357795492] [2024-11-03 14:05:39,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:39,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 14:05:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 14:05:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 14:05:39,800 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:39,989 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-03 14:05:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 14:05:39,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-03 14:05:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:39,990 INFO L225 Difference]: With dead ends: 34 [2024-11-03 14:05:39,990 INFO L226 Difference]: Without dead ends: 21 [2024-11-03 14:05:39,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-03 14:05:39,991 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 14:05:39,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 47 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 14:05:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-03 14:05:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-03 14:05:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2024-11-03 14:05:39,994 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2024-11-03 14:05:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:39,994 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2024-11-03 14:05:39,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2024-11-03 14:05:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-03 14:05:39,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:05:39,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:05:40,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 14:05:40,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:40,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:05:40,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:05:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2014843095, now seen corresponding path program 1 times [2024-11-03 14:05:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:05:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636606519] [2024-11-03 14:05:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:05:40,199 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:05:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:40,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:05:40,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 14:05:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:05:40,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 14:05:40,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:05:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:40,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:05:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:05:40,654 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:05:40,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636606519] [2024-11-03 14:05:40,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [636606519] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:05:40,655 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:05:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2024-11-03 14:05:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210800389] [2024-11-03 14:05:40,655 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:05:40,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 14:05:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:05:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 14:05:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:05:40,656 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:05:40,956 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2024-11-03 14:05:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 14:05:40,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-03 14:05:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:05:40,957 INFO L225 Difference]: With dead ends: 21 [2024-11-03 14:05:40,957 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 14:05:40,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-03 14:05:40,958 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:05:40,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 54 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 14:05:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 14:05:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 14:05:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 14:05:40,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-11-03 14:05:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:05:40,959 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 14:05:40,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 14:05:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 14:05:40,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 14:05:40,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 14:05:40,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 14:05:41,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:05:41,168 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-03 14:05:41,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 14:05:41,268 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 14:05:41,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:05:41 BoogieIcfgContainer [2024-11-03 14:05:41,277 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 14:05:41,277 INFO L158 Benchmark]: Toolchain (without parser) took 8676.10ms. Allocated memory was 232.8MB in the beginning and 298.8MB in the end (delta: 66.1MB). Free memory was 166.0MB in the beginning and 160.8MB in the end (delta: 5.2MB). Peak memory consumption was 72.3MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,278 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 232.8MB. Free memory was 182.6MB in the beginning and 182.5MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 14:05:41,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.16ms. Allocated memory is still 232.8MB. Free memory was 165.5MB in the beginning and 151.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.69ms. Allocated memory is still 232.8MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,279 INFO L158 Benchmark]: Boogie Preprocessor took 93.20ms. Allocated memory is still 232.8MB. Free memory was 149.7MB in the beginning and 146.6MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,279 INFO L158 Benchmark]: RCFGBuilder took 1082.95ms. Allocated memory is still 232.8MB. Free memory was 146.6MB in the beginning and 128.2MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,279 INFO L158 Benchmark]: TraceAbstraction took 7234.96ms. Allocated memory was 232.8MB in the beginning and 298.8MB in the end (delta: 66.1MB). Free memory was 127.7MB in the beginning and 160.8MB in the end (delta: -33.1MB). Peak memory consumption was 33.5MB. Max. memory is 8.0GB. [2024-11-03 14:05:41,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 232.8MB. Free memory was 182.6MB in the beginning and 182.5MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.16ms. Allocated memory is still 232.8MB. Free memory was 165.5MB in the beginning and 151.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.69ms. Allocated memory is still 232.8MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 93.20ms. Allocated memory is still 232.8MB. Free memory was 149.7MB in the beginning and 146.6MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1082.95ms. Allocated memory is still 232.8MB. Free memory was 146.6MB in the beginning and 128.2MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 7234.96ms. Allocated memory was 232.8MB in the beginning and 298.8MB in the end (delta: 66.1MB). Free memory was 127.7MB in the beginning and 160.8MB in the end (delta: -33.1MB). Peak memory consumption was 33.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 105]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 431 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 267 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 164 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 168 ConstructedInterpolants, 13 QuantifiedInterpolants, 738 SizeOfPredicates, 17 NumberOfNonLiveVariables, 324 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-03 14:05:41,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...