/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_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:36:36,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:36:36,190 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 02:36:36,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:36:36,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:36:36,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:36:36,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:36:36,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:36:36,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:36:36,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:36:36,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:36:36,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:36:36,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:36:36,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:36:36,212 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:36:36,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:36:36,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:36:36,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:36:36,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:36:36,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:36:36,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:36:36,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:36:36,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:36:36,216 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:36:36,216 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:36:36,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:36:36,217 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:36:36,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:36:36,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:36:36,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:36:36,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:36:36,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:36:36,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:36:36,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:36:36,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:36:36,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:36:36,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:36:36,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:36:36,219 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:36:36,219 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:36,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:36:36,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:36:36,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:36:36,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:36:36,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:36,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:36:36,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:36:36,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:36:36,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:36:36,420 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:36:36,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2024-11-03 02:36:37,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:36:37,934 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:36:37,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2024-11-03 02:36:37,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17750611a/4815d1665cf645c8a92f88049fbfa3e6/FLAG1828f7a03 [2024-11-03 02:36:37,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17750611a/4815d1665cf645c8a92f88049fbfa3e6 [2024-11-03 02:36:37,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:36:37,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:36:37,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:36:37,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:36:37,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:36:37,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:37" (1/1) ... [2024-11-03 02:36:37,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e115a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:37, skipping insertion in model container [2024-11-03 02:36:37,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:37" (1/1) ... [2024-11-03 02:36:38,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:36:38,178 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_1121b.c[3884,3897] [2024-11-03 02:36:38,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:36:38,190 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:36:38,227 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_1121b.c[3884,3897] [2024-11-03 02:36:38,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:36:38,249 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:36:38,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38 WrapperNode [2024-11-03 02:36:38,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:36:38,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:36:38,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:36:38,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:36:38,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,305 INFO L138 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 228 [2024-11-03 02:36:38,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:36:38,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:36:38,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:36:38,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:36:38,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,346 INFO L175 MemorySlicer]: Split 19 memory accesses to 6 slices as follows [2, 3, 5, 3, 3, 3]. 26 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 0, 1, 2, 2]. [2024-11-03 02:36:38,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:36:38,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:36:38,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:36:38,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:36:38,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (1/1) ... [2024-11-03 02:36:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:36:38,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:36:38,405 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 02:36:38,408 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 02:36:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-03 02:36:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 02:36:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2024-11-03 02:36:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:36:38,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-03 02:36:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-03 02:36:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-03 02:36:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-11-03 02:36:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 02:36:38,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:36:38,556 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:36:48,195 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-03 02:36:48,195 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:36:48,206 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:36:48,206 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-03 02:36:48,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:36:48 BoogieIcfgContainer [2024-11-03 02:36:48,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:36:48,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:36:48,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:36:48,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:36:48,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:36:37" (1/3) ... [2024-11-03 02:36:48,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ef2a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:36:48, skipping insertion in model container [2024-11-03 02:36:48,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:38" (2/3) ... [2024-11-03 02:36:48,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ef2a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:36:48, skipping insertion in model container [2024-11-03 02:36:48,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:36:48" (3/3) ... [2024-11-03 02:36:48,213 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2024-11-03 02:36:48,225 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:36:48,225 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:36:48,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:36:48,273 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;@250e1244, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:36:48,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:36:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 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 02:36:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-03 02:36:48,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:36:48,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:36:48,282 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:36:48,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:36:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2024-11-03 02:36:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:36:48,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162291018] [2024-11-03 02:36:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:36:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:36:48,307 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 02:36:48,311 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 02:36:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:36:48,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 02:36:48,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:36:48,501 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 02:36:48,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:36:48,504 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 02:36:48,505 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:36:48,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162291018] [2024-11-03 02:36:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [162291018] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:36:48,505 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:36:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 02:36:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570489357] [2024-11-03 02:36:48,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:36:48,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 02:36:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:36:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 02:36:48,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:36:48,525 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 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 02:36:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:36:48,538 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2024-11-03 02:36:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 02:36:48,539 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 02:36:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:36:48,545 INFO L225 Difference]: With dead ends: 108 [2024-11-03 02:36:48,545 INFO L226 Difference]: Without dead ends: 52 [2024-11-03 02:36:48,547 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 02:36:48,549 INFO L432 NwaCegarLoop]: 81 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, 81 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 02:36:48,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:36:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-03 02:36:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-03 02:36:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 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 02:36:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2024-11-03 02:36:48,573 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2024-11-03 02:36:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:36:48,573 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2024-11-03 02:36:48,573 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 02:36:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2024-11-03 02:36:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 02:36:48,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:36:48,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:36:48,579 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 02:36:48,774 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 02:36:48,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:36:48,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:36:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2024-11-03 02:36:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:36:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310997676] [2024-11-03 02:36:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:36:48,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:48,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:36:48,781 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 02:36:48,782 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 02:36:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:36:49,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 02:36:49,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:36:58,790 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 02:36:58,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:11,329 WARN L286 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:15,753 WARN L873 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_fmod_double_~x#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (not (let ((.cse0 (let ((.cse1 (fp.mul currentRoundingMode |ULTIMATE.start_fmod_double_~x#1| |c_ULTIMATE.start_fmod_double_~y#1|))) (fp.div currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2024-11-03 02:37:24,193 WARN L286 SmtUtils]: Spent 8.44s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:32,571 WARN L286 SmtUtils]: Spent 8.38s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:40,970 WARN L286 SmtUtils]: Spent 8.40s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:49,303 WARN L286 SmtUtils]: Spent 8.33s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:57,665 WARN L286 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 02:37:57,909 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 02:37:57,909 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310997676] [2024-11-03 02:37:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [310997676] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:57,910 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:57,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 02:37:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207673379] [2024-11-03 02:37:57,910 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:57,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 02:37:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 02:37:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2024-11-03 02:37:57,912 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 02:38:02,455 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_fmod_double_~y#1| (fp.neg (_ +zero 11 53))) (forall ((|ULTIMATE.start_fmod_double_~x#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (not (let ((.cse0 (let ((.cse1 (fp.mul currentRoundingMode |ULTIMATE.start_fmod_double_~x#1| |c_ULTIMATE.start_fmod_double_~y#1|))) (fp.div currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2024-11-03 02:38:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:38:05,286 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2024-11-03 02:38:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:38:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 02:38:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:38:05,287 INFO L225 Difference]: With dead ends: 57 [2024-11-03 02:38:05,288 INFO L226 Difference]: Without dead ends: 52 [2024-11-03 02:38:05,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=23, Invalid=55, Unknown=2, NotChecked=30, Total=110 [2024-11-03 02:38:05,289 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 02:38:05,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 118 Unchecked, 0.4s Time] [2024-11-03 02:38:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-03 02:38:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-03 02:38:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 51 states have internal predecessors, (77), 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 02:38:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2024-11-03 02:38:05,293 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2024-11-03 02:38:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:38:05,293 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2024-11-03 02:38:05,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 02:38:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2024-11-03 02:38:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 02:38:05,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:38:05,294 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:38:05,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 02:38:05,498 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 02:38:05,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:38:05,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:38:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2024-11-03 02:38:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:38:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384714654] [2024-11-03 02:38:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:38:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:38:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:38:05,502 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 02:38:05,504 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 02:38:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:38:05,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 02:38:05,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:38:06,783 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 02:38:06,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:38:07,977 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 02:38:07,977 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:38:07,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384714654] [2024-11-03 02:38:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384714654] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:38:07,978 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:38:07,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-03 02:38:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730534489] [2024-11-03 02:38:07,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:38:07,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 02:38:07,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:38:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 02:38:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:38:07,980 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 02:38:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:38:08,568 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2024-11-03 02:38:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 02:38:08,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14 [2024-11-03 02:38:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:38:08,568 INFO L225 Difference]: With dead ends: 52 [2024-11-03 02:38:08,568 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 02:38:08,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:38:08,569 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:38:08,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:38:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 02:38:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 02:38:08,570 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 02:38:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 02:38:08,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2024-11-03 02:38:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:38:08,571 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 02:38:08,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 02:38:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 02:38:08,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 02:38:08,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 02:38:08,578 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 02:38:08,774 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 02:38:08,776 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-03 02:38:08,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 02:38:14,140 WARN L286 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 12 DAG size of output: 4 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-03 02:38:21,937 WARN L286 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 12 DAG size of output: 4 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-03 02:38:21,978 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 02:38:21,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:38:21 BoogieIcfgContainer [2024-11-03 02:38:21,990 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 02:38:21,990 INFO L158 Benchmark]: Toolchain (without parser) took 104021.01ms. Allocated memory is still 206.6MB. Free memory was 155.7MB in the beginning and 77.7MB in the end (delta: 78.0MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,990 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 02:38:21,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.35ms. Allocated memory is still 206.6MB. Free memory was 155.3MB in the beginning and 138.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.49ms. Allocated memory is still 206.6MB. Free memory was 138.9MB in the beginning and 136.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,991 INFO L158 Benchmark]: Boogie Preprocessor took 59.79ms. Allocated memory is still 206.6MB. Free memory was 136.8MB in the beginning and 132.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,991 INFO L158 Benchmark]: RCFGBuilder took 9839.92ms. Allocated memory is still 206.6MB. Free memory was 132.6MB in the beginning and 160.5MB in the end (delta: -27.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,991 INFO L158 Benchmark]: TraceAbstraction took 93781.89ms. Allocated memory is still 206.6MB. Free memory was 160.0MB in the beginning and 77.7MB in the end (delta: 82.3MB). Peak memory consumption was 81.8MB. Max. memory is 8.0GB. [2024-11-03 02:38:21,996 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 206.6MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.35ms. Allocated memory is still 206.6MB. Free memory was 155.3MB in the beginning and 138.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.49ms. Allocated memory is still 206.6MB. Free memory was 138.9MB in the beginning and 136.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.79ms. Allocated memory is still 206.6MB. Free memory was 136.8MB in the beginning and 132.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 9839.92ms. Allocated memory is still 206.6MB. Free memory was 132.6MB in the beginning and 160.5MB in the end (delta: -27.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 93781.89ms. Allocated memory is still 206.6MB. Free memory was 160.0MB in the beginning and 77.7MB in the end (delta: 82.3MB). Peak memory consumption was 81.8MB. 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: 177]: 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, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 118 IncrementalHoareTripleChecker+Unchecked, 345 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 160 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 70.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 13 QuantifiedInterpolants, 387 SizeOfPredicates, 7 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 23 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: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-03 02:38:22,211 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...