/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:32:19,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:32:19,897 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 02:32:19,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:32:19,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:32:19,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:32:19,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:32:19,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:32:19,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:32:19,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:32:19,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:32:19,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:32:19,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:32:19,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:32:19,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:32:19,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:32:19,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:32:19,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:32:19,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:32:19,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:32:19,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:32:19,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:32:19,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:32:19,946 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:32:19,947 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:32:19,947 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:32:19,947 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:32:19,947 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:32:19,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:32:19,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:32:19,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:32:19,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:32:19,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:32:19,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:32:19,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:32:19,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:32:19,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:32:19,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:32:19,951 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:32:19,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:32:19,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:32:19,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:32:19,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:32:19,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:32:19,953 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:32:20,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:32:20,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:32:20,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:32:20,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:32:20,215 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:32:20,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2024-11-03 02:32:21,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:32:21,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:32:21,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2024-11-03 02:32:21,911 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e1f9b8e/fb8dd8bcd78b4e858ea4bede714b5d99/FLAG24262328c [2024-11-03 02:32:21,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e1f9b8e/fb8dd8bcd78b4e858ea4bede714b5d99 [2024-11-03 02:32:21,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:32:21,933 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:32:21,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:32:21,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:32:21,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:32:21,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:32:21" (1/1) ... [2024-11-03 02:32:21,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645b61e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:21, skipping insertion in model container [2024-11-03 02:32:21,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:32:21" (1/1) ... [2024-11-03 02:32:21,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:32:22,221 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_0730a.c[3437,3450] [2024-11-03 02:32:22,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:32:22,246 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:32:22,291 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_0730a.c[3437,3450] [2024-11-03 02:32:22,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:32:22,318 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:32:22,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22 WrapperNode [2024-11-03 02:32:22,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:32:22,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:32:22,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:32:22,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:32:22,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,365 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 184 [2024-11-03 02:32:22,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:32:22,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:32:22,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:32:22,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:32:22,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,399 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 3, 3, 3]. 27 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, 2, 1]. [2024-11-03 02:32:22,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:32:22,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:32:22,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:32:22,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:32:22,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (1/1) ... [2024-11-03 02:32:22,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:32:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:32:22,474 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 02:32:22,476 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 02:32:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:32:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-03 02:32:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-03 02:32:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 02:32:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:32:22,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:32:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-03 02:32:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-03 02:32:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-03 02:32:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-03 02:32:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 02:32:22,591 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:32:22,593 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:32:26,142 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-03 02:32:26,142 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:32:26,153 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:32:26,154 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-03 02:32:26,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:32:26 BoogieIcfgContainer [2024-11-03 02:32:26,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:32:26,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:32:26,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:32:26,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:32:26,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:32:21" (1/3) ... [2024-11-03 02:32:26,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409b15be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:32:26, skipping insertion in model container [2024-11-03 02:32:26,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:32:22" (2/3) ... [2024-11-03 02:32:26,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409b15be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:32:26, skipping insertion in model container [2024-11-03 02:32:26,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:32:26" (3/3) ... [2024-11-03 02:32:26,162 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2024-11-03 02:32:26,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:32:26,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:32:26,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:32:26,234 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;@1ace2aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:32:26,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:32:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.64) internal successors, (82), 51 states have internal predecessors, (82), 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 02:32:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-03 02:32:26,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:32:26,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:32:26,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:32:26,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:32:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2024-11-03 02:32:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:32:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572099519] [2024-11-03 02:32:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:32:26,255 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:32:26,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:32:26,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:32:26,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 02:32:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:32:26,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 02:32:26,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:32:26,454 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 02:32:26,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:32:26,486 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 02:32:26,488 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:32:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572099519] [2024-11-03 02:32:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572099519] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:32:26,489 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:32:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 02:32:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118323841] [2024-11-03 02:32:26,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:32:26,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 02:32:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:32:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 02:32:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:32:26,514 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.64) internal successors, (82), 51 states have internal predecessors, (82), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:32:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:32:26,534 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2024-11-03 02:32:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 02:32:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-11-03 02:32:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:32:26,546 INFO L225 Difference]: With dead ends: 102 [2024-11-03 02:32:26,546 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 02:32:26,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 02:32:26,552 INFO L432 NwaCegarLoop]: 71 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, 71 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 02:32:26,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:32:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 02:32:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-03 02:32:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 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 02:32:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2024-11-03 02:32:26,581 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2024-11-03 02:32:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:32:26,582 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2024-11-03 02:32:26,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:32:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2024-11-03 02:32:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 02:32:26,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:32:26,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:32:26,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 02:32:26,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:32:26,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:32:26,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:32:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2024-11-03 02:32:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:32:26,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323350747] [2024-11-03 02:32:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:32:26,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:32:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:32:26,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:32:26,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 02:32:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:32:27,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 02:32:27,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:32:29,142 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 02:32:29,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:32:43,547 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:32:47,647 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (or (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start___ieee754_sqrt_~x#1| |c_ULTIMATE.start___ieee754_sqrt_~x#1|) |c_ULTIMATE.start___ieee754_sqrt_~x#1|))) (not (= (_ bv0 32) (bvadd (_ bv1 32) (bvneg (bvlshr (let ((.cse0 (bvadd (_ bv2146435072 32) (bvneg (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|)) (bvlshr (let ((.cse1 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_7|))) (bvor .cse1 (bvneg .cse1))) (_ bv31 32))))))) (bvor (bvneg .cse0) .cse0)) (_ bv31 32)))))))) is different from false [2024-11-03 02:32:54,396 WARN L286 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:33:04,295 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:33:09,749 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:33:09,775 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 02:33:09,775 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:33:09,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323350747] [2024-11-03 02:33:09,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [323350747] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:33:09,776 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:33:09,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2024-11-03 02:33:09,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618660535] [2024-11-03 02:33:09,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:33:09,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 02:33:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:33:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 02:33:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2024-11-03 02:33:09,781 INFO L87 Difference]: Start difference. First operand 49 states and 68 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 02:33:13,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 02:33:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:33:15,918 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-11-03 02:33:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 02:33:15,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 12 [2024-11-03 02:33:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:33:15,920 INFO L225 Difference]: With dead ends: 58 [2024-11-03 02:33:15,920 INFO L226 Difference]: Without dead ends: 50 [2024-11-03 02:33:15,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2024-11-03 02:33:15,922 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 60 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:33:15,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 469 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 65 Unchecked, 5.0s Time] [2024-11-03 02:33:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-03 02:33:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-03 02:33:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 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 02:33:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2024-11-03 02:33:15,929 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 12 [2024-11-03 02:33:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:33:15,930 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2024-11-03 02:33:15,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 02:33:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2024-11-03 02:33:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-03 02:33:15,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:33:15,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:33:15,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 02:33:16,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:33:16,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:33:16,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:33:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2126658577, now seen corresponding path program 1 times [2024-11-03 02:33:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:33:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233224722] [2024-11-03 02:33:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:33:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:33:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:33:16,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:33:16,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 02:33:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:33:16,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 02:33:16,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:33:17,435 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 02:33:17,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:33:17,844 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 02:33:17,844 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:33:17,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233224722] [2024-11-03 02:33:17,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [233224722] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:33:17,845 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:33:17,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 02:33:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28773914] [2024-11-03 02:33:17,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:33:17,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:33:17,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:33:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:33:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:33:17,847 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 02:33:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:33:17,995 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2024-11-03 02:33:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:33:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 15 [2024-11-03 02:33:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:33:17,996 INFO L225 Difference]: With dead ends: 49 [2024-11-03 02:33:17,996 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 02:33:17,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 02:33:17,998 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:33:17,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:33:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 02:33:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 02:33:17,999 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 02:33:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 02:33:18,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-03 02:33:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:33:18,000 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 02:33:18,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 02:33:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 02:33:18,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 02:33:18,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 02:33:18,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 02:33:18,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:33:18,207 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-03 02:33:18,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 02:33:18,393 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 02:33:18,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:33:18 BoogieIcfgContainer [2024-11-03 02:33:18,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 02:33:18,406 INFO L158 Benchmark]: Toolchain (without parser) took 56472.55ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 146.5MB in the beginning and 173.2MB in the end (delta: -26.7MB). Peak memory consumption was 93.6MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,406 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 02:33:18,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.70ms. Allocated memory is still 186.6MB. Free memory was 146.1MB in the beginning and 130.7MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.92ms. Allocated memory is still 186.6MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,407 INFO L158 Benchmark]: Boogie Preprocessor took 65.64ms. Allocated memory is still 186.6MB. Free memory was 128.3MB in the beginning and 124.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,407 INFO L158 Benchmark]: RCFGBuilder took 3721.53ms. Allocated memory is still 186.6MB. Free memory was 124.8MB in the beginning and 102.8MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,407 INFO L158 Benchmark]: TraceAbstraction took 52249.33ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 102.1MB in the beginning and 173.2MB in the end (delta: -71.1MB). Peak memory consumption was 49.5MB. Max. memory is 8.0GB. [2024-11-03 02:33:18,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 383.70ms. Allocated memory is still 186.6MB. Free memory was 146.1MB in the beginning and 130.7MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.92ms. Allocated memory is still 186.6MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.64ms. Allocated memory is still 186.6MB. Free memory was 128.3MB in the beginning and 124.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3721.53ms. Allocated memory is still 186.6MB. Free memory was 124.8MB in the beginning and 102.8MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 52249.33ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 102.1MB in the beginning and 173.2MB in the end (delta: -71.1MB). Peak memory consumption was 49.5MB. 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: 162]: 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, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 547 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 65 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 133 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 43.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 18 QuantifiedInterpolants, 852 SizeOfPredicates, 8 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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: 30]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-03 02:33:18,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...