/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:03:59,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:03:59,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:03:59,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:03:59,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:03:59,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:03:59,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:03:59,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:03:59,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:03:59,593 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:03:59,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:03:59,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:03:59,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:03:59,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:03:59,596 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:03:59,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:03:59,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:03:59,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:03:59,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:03:59,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:03:59,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:03:59,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:03:59,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:03:59,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:03:59,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:03:59,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:03:59,600 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:03:59,601 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:03:59,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:03:59,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:03:59,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:03:59,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:03:59,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:04:00,009 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:04:00,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2023-12-25 06:04:01,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:04:02,094 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:04:02,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2023-12-25 06:04:02,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d121fc7/917ac0778ce342fc9b7f449f31f2d24e/FLAG731d76f4f [2023-12-25 06:04:02,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d121fc7/917ac0778ce342fc9b7f449f31f2d24e [2023-12-25 06:04:02,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:04:02,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:04:02,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:04:02,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:04:02,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:04:02,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:02,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edd6684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02, skipping insertion in model container [2023-12-25 06:04:02,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:02,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:04:02,472 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2023-12-25 06:04:02,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:04:02,726 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-25 06:04:02,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:04:02,746 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2023-12-25 06:04:02,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:04:02,863 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:04:02,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-12-25 06:04:02,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [58] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [130] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [388] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [415] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [453] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [549] [2023-12-25 06:04:02,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [915] [2023-12-25 06:04:02,899 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2023-12-25 06:04:02,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:04:02,994 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:04:02,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02 WrapperNode [2023-12-25 06:04:02,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:04:02,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:04:02,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:04:02,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:04:03,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,114 INFO L138 Inliner]: procedures = 60, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 225 [2023-12-25 06:04:03,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:04:03,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:04:03,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:04:03,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:04:03,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,170 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 06:04:03,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:04:03,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:04:03,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:04:03,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:04:03,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (1/1) ... [2023-12-25 06:04:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:04:03,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:04:03,270 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) [2023-12-25 06:04:03,318 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 [2023-12-25 06:04:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:04:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-25 06:04:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-25 06:04:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-25 06:04:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-25 06:04:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-25 06:04:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-25 06:04:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-25 06:04:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-25 06:04:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-25 06:04:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-25 06:04:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:04:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-25 06:04:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-25 06:04:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-25 06:04:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-25 06:04:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-25 06:04:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-25 06:04:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-25 06:04:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-25 06:04:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:04:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:04:03,468 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:04:03,471 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:04:03,892 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:04:03,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:04:03,994 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-25 06:04:03,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:04:03 BoogieIcfgContainer [2023-12-25 06:04:03,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:04:04,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:04:04,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:04:04,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:04:04,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:04:02" (1/3) ... [2023-12-25 06:04:04,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610fbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:04:04, skipping insertion in model container [2023-12-25 06:04:04,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:04:02" (2/3) ... [2023-12-25 06:04:04,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610fbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:04:04, skipping insertion in model container [2023-12-25 06:04:04,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:04:03" (3/3) ... [2023-12-25 06:04:04,014 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2023-12-25 06:04:04,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:04:04,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:04:04,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:04:04,119 INFO L357 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, mHoare=true, 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;@4dee0c4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:04:04,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:04:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 65 states have internal predecessors, (84), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-25 06:04:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-25 06:04:04,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:04,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:04,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:04,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1245774375, now seen corresponding path program 1 times [2023-12-25 06:04:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155159866] [2023-12-25 06:04:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:04,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:04,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:04,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:04:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:04,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 06:04:04,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:04,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:04,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155159866] [2023-12-25 06:04:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155159866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:04,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:04,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 06:04:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526752709] [2023-12-25 06:04:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 06:04:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 06:04:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 06:04:04,344 INFO L87 Difference]: Start difference. First operand has 82 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 65 states have internal predecessors, (84), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:04,387 INFO L93 Difference]: Finished difference Result 162 states and 233 transitions. [2023-12-25 06:04:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 06:04:04,389 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-25 06:04:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:04,396 INFO L225 Difference]: With dead ends: 162 [2023-12-25 06:04:04,396 INFO L226 Difference]: Without dead ends: 77 [2023-12-25 06:04:04,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 06:04:04,411 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:04,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-25 06:04:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-25 06:04:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 61 states have internal predecessors, (74), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-25 06:04:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2023-12-25 06:04:04,467 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 12 [2023-12-25 06:04:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:04,467 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2023-12-25 06:04:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2023-12-25 06:04:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-25 06:04:04,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:04,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:04,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:04,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:04,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2018430265, now seen corresponding path program 1 times [2023-12-25 06:04:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956529552] [2023-12-25 06:04:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:04,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:04,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 06:04:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:04,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 06:04:04,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:04,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:04,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956529552] [2023-12-25 06:04:04,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956529552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:04,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:04,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 06:04:04,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073324083] [2023-12-25 06:04:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:04,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 06:04:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 06:04:04,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:04,813 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:04,889 INFO L93 Difference]: Finished difference Result 127 states and 173 transitions. [2023-12-25 06:04:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 06:04:04,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-25 06:04:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:04,893 INFO L225 Difference]: With dead ends: 127 [2023-12-25 06:04:04,893 INFO L226 Difference]: Without dead ends: 69 [2023-12-25 06:04:04,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:04,896 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:04,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 149 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-25 06:04:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-25 06:04:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.446808510638298) internal successors, (68), 56 states have internal predecessors, (68), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-25 06:04:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2023-12-25 06:04:04,909 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 13 [2023-12-25 06:04:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:04,909 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2023-12-25 06:04:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2023-12-25 06:04:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-25 06:04:04,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:04,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:04,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-25 06:04:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:05,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 428466048, now seen corresponding path program 1 times [2023-12-25 06:04:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:05,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066075137] [2023-12-25 06:04:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:05,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:05,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 06:04:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:05,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 06:04:05,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:05,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:05,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066075137] [2023-12-25 06:04:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066075137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:05,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:05,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 06:04:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427348671] [2023-12-25 06:04:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 06:04:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 06:04:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:05,236 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:05,261 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2023-12-25 06:04:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 06:04:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-25 06:04:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:05,263 INFO L225 Difference]: With dead ends: 136 [2023-12-25 06:04:05,263 INFO L226 Difference]: Without dead ends: 69 [2023-12-25 06:04:05,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:05,264 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 79 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-25 06:04:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-25 06:04:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.425531914893617) internal successors, (67), 56 states have internal predecessors, (67), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-25 06:04:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2023-12-25 06:04:05,271 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 16 [2023-12-25 06:04:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:05,272 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2023-12-25 06:04:05,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:04:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2023-12-25 06:04:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 06:04:05,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:05,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:05,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:05,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1919446139, now seen corresponding path program 1 times [2023-12-25 06:04:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:05,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930003008] [2023-12-25 06:04:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:05,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:05,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:05,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 06:04:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:05,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:05,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:05,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:05,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930003008] [2023-12-25 06:04:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930003008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 06:04:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486025642] [2023-12-25 06:04:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 06:04:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 06:04:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:05,656 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:04:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:05,744 INFO L93 Difference]: Finished difference Result 177 states and 243 transitions. [2023-12-25 06:04:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 06:04:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-25 06:04:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:05,748 INFO L225 Difference]: With dead ends: 177 [2023-12-25 06:04:05,748 INFO L226 Difference]: Without dead ends: 110 [2023-12-25 06:04:05,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 06:04:05,754 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 57 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:05,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-25 06:04:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-12-25 06:04:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 76 states have (on average 1.368421052631579) internal successors, (104), 85 states have internal predecessors, (104), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (22), 14 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:04:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2023-12-25 06:04:05,782 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 26 [2023-12-25 06:04:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:05,782 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2023-12-25 06:04:05,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:04:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2023-12-25 06:04:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-25 06:04:05,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:05,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:05,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:05,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -453978174, now seen corresponding path program 1 times [2023-12-25 06:04:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623598388] [2023-12-25 06:04:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:05,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:05,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:05,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:06,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 06:04:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:06,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:04:06,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:06,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:06,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:06,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623598388] [2023-12-25 06:04:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623598388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:06,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:06,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 06:04:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496725901] [2023-12-25 06:04:06,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:06,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:06,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:06,205 INFO L87 Difference]: Start difference. First operand 108 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-25 06:04:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:06,340 INFO L93 Difference]: Finished difference Result 288 states and 392 transitions. [2023-12-25 06:04:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:04:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-12-25 06:04:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:06,344 INFO L225 Difference]: With dead ends: 288 [2023-12-25 06:04:06,344 INFO L226 Difference]: Without dead ends: 182 [2023-12-25 06:04:06,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:04:06,345 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 26 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:06,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 227 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:04:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-25 06:04:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-25 06:04:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 130 states have (on average 1.323076923076923) internal successors, (172), 142 states have internal predecessors, (172), 26 states have call successors, (26), 25 states have call predecessors, (26), 25 states have return successors, (38), 24 states have call predecessors, (38), 26 states have call successors, (38) [2023-12-25 06:04:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 236 transitions. [2023-12-25 06:04:06,390 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 236 transitions. Word has length 36 [2023-12-25 06:04:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:06,390 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 236 transitions. [2023-12-25 06:04:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-25 06:04:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 236 transitions. [2023-12-25 06:04:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 06:04:06,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:06,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:06,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:06,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:06,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 785372712, now seen corresponding path program 1 times [2023-12-25 06:04:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944094299] [2023-12-25 06:04:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:06,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:06,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:06,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:04:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:06,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:04:06,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:06,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:06,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944094299] [2023-12-25 06:04:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944094299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:04:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494214243] [2023-12-25 06:04:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:04:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:04:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:04:06,790 INFO L87 Difference]: Start difference. First operand 182 states and 236 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:04:07,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:07,286 INFO L93 Difference]: Finished difference Result 518 states and 707 transitions. [2023-12-25 06:04:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:04:07,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-12-25 06:04:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:07,290 INFO L225 Difference]: With dead ends: 518 [2023-12-25 06:04:07,290 INFO L226 Difference]: Without dead ends: 412 [2023-12-25 06:04:07,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:04:07,292 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 233 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:07,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 264 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:04:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-25 06:04:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 395. [2023-12-25 06:04:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 283 states have (on average 1.332155477031802) internal successors, (377), 312 states have internal predecessors, (377), 55 states have call successors, (55), 48 states have call predecessors, (55), 56 states have return successors, (86), 53 states have call predecessors, (86), 55 states have call successors, (86) [2023-12-25 06:04:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 518 transitions. [2023-12-25 06:04:07,337 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 518 transitions. Word has length 40 [2023-12-25 06:04:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:07,337 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 518 transitions. [2023-12-25 06:04:07,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:04:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 518 transitions. [2023-12-25 06:04:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 06:04:07,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:07,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:07,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:07,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -802975190, now seen corresponding path program 1 times [2023-12-25 06:04:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860028321] [2023-12-25 06:04:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:07,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:07,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:07,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:07,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 06:04:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:07,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:07,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:07,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:07,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860028321] [2023-12-25 06:04:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860028321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:07,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:04:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165331428] [2023-12-25 06:04:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:07,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:07,646 INFO L87 Difference]: Start difference. First operand 395 states and 518 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:07,766 INFO L93 Difference]: Finished difference Result 736 states and 1001 transitions. [2023-12-25 06:04:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:04:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-12-25 06:04:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:07,770 INFO L225 Difference]: With dead ends: 736 [2023-12-25 06:04:07,771 INFO L226 Difference]: Without dead ends: 412 [2023-12-25 06:04:07,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:04:07,773 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 10 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:07,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 260 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:04:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-25 06:04:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 397. [2023-12-25 06:04:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 285 states have (on average 1.3263157894736841) internal successors, (378), 314 states have internal predecessors, (378), 55 states have call successors, (55), 48 states have call predecessors, (55), 56 states have return successors, (86), 53 states have call predecessors, (86), 55 states have call successors, (86) [2023-12-25 06:04:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 519 transitions. [2023-12-25 06:04:07,840 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 519 transitions. Word has length 40 [2023-12-25 06:04:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:07,842 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 519 transitions. [2023-12-25 06:04:07,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 519 transitions. [2023-12-25 06:04:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 06:04:07,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:07,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:07,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:08,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:08,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2082838868, now seen corresponding path program 1 times [2023-12-25 06:04:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987713546] [2023-12-25 06:04:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:08,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:08,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:08,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 06:04:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:08,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:08,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:08,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:08,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987713546] [2023-12-25 06:04:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987713546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:08,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:08,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:04:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813700894] [2023-12-25 06:04:08,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:08,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:08,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:08,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:08,216 INFO L87 Difference]: Start difference. First operand 397 states and 519 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:08,324 INFO L93 Difference]: Finished difference Result 822 states and 1106 transitions. [2023-12-25 06:04:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:04:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-12-25 06:04:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:08,327 INFO L225 Difference]: With dead ends: 822 [2023-12-25 06:04:08,328 INFO L226 Difference]: Without dead ends: 427 [2023-12-25 06:04:08,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:08,330 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 6 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:08,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 253 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-25 06:04:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 400. [2023-12-25 06:04:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 290 states have (on average 1.3172413793103448) internal successors, (382), 318 states have internal predecessors, (382), 54 states have call successors, (54), 47 states have call predecessors, (54), 55 states have return successors, (85), 52 states have call predecessors, (85), 54 states have call successors, (85) [2023-12-25 06:04:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 521 transitions. [2023-12-25 06:04:08,403 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 521 transitions. Word has length 40 [2023-12-25 06:04:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:08,403 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 521 transitions. [2023-12-25 06:04:08,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 521 transitions. [2023-12-25 06:04:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 06:04:08,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:08,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:08,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:08,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:08,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:08,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1291336618, now seen corresponding path program 1 times [2023-12-25 06:04:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:08,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291887907] [2023-12-25 06:04:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:08,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:08,613 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:08,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 06:04:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:08,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:04:08,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:04:08,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:08,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291887907] [2023-12-25 06:04:08,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291887907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:08,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:08,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:04:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509320369] [2023-12-25 06:04:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:04:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:08,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:04:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:04:08,810 INFO L87 Difference]: Start difference. First operand 400 states and 521 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:09,276 INFO L93 Difference]: Finished difference Result 735 states and 958 transitions. [2023-12-25 06:04:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:04:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-12-25 06:04:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:09,279 INFO L225 Difference]: With dead ends: 735 [2023-12-25 06:04:09,279 INFO L226 Difference]: Without dead ends: 408 [2023-12-25 06:04:09,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:04:09,281 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 208 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:09,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 347 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:04:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-25 06:04:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 398. [2023-12-25 06:04:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 288 states have (on average 1.3055555555555556) internal successors, (376), 316 states have internal predecessors, (376), 54 states have call successors, (54), 47 states have call predecessors, (54), 55 states have return successors, (85), 52 states have call predecessors, (85), 54 states have call successors, (85) [2023-12-25 06:04:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 515 transitions. [2023-12-25 06:04:09,314 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 515 transitions. Word has length 43 [2023-12-25 06:04:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:09,314 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 515 transitions. [2023-12-25 06:04:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 06:04:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 515 transitions. [2023-12-25 06:04:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 06:04:09,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:09,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:09,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:09,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:09,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -845666940, now seen corresponding path program 1 times [2023-12-25 06:04:09,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:09,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965064268] [2023-12-25 06:04:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:09,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:09,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:09,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 06:04:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:09,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:09,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:04:09,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:09,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965064268] [2023-12-25 06:04:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965064268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:04:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114527853] [2023-12-25 06:04:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:09,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:09,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:09,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:09,644 INFO L87 Difference]: Start difference. First operand 398 states and 515 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:04:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:09,722 INFO L93 Difference]: Finished difference Result 800 states and 1082 transitions. [2023-12-25 06:04:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:04:09,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2023-12-25 06:04:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:09,725 INFO L225 Difference]: With dead ends: 800 [2023-12-25 06:04:09,725 INFO L226 Difference]: Without dead ends: 404 [2023-12-25 06:04:09,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:09,726 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:09,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 234 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-25 06:04:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 398. [2023-12-25 06:04:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 288 states have (on average 1.2951388888888888) internal successors, (373), 316 states have internal predecessors, (373), 54 states have call successors, (54), 47 states have call predecessors, (54), 55 states have return successors, (85), 52 states have call predecessors, (85), 54 states have call successors, (85) [2023-12-25 06:04:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 512 transitions. [2023-12-25 06:04:09,768 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 512 transitions. Word has length 65 [2023-12-25 06:04:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:09,768 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 512 transitions. [2023-12-25 06:04:09,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:04:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 512 transitions. [2023-12-25 06:04:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 06:04:09,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:09,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:09,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:09,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1399912514, now seen corresponding path program 1 times [2023-12-25 06:04:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:09,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441121771] [2023-12-25 06:04:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:09,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:09,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:09,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:10,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 06:04:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:10,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:10,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:04:10,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:10,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441121771] [2023-12-25 06:04:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441121771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:10,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:10,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:04:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911040540] [2023-12-25 06:04:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:10,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:10,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:10,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:10,103 INFO L87 Difference]: Start difference. First operand 398 states and 512 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:04:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:10,186 INFO L93 Difference]: Finished difference Result 749 states and 1002 transitions. [2023-12-25 06:04:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:04:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2023-12-25 06:04:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:10,188 INFO L225 Difference]: With dead ends: 749 [2023-12-25 06:04:10,188 INFO L226 Difference]: Without dead ends: 353 [2023-12-25 06:04:10,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:04:10,189 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:10,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:04:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-25 06:04:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 351. [2023-12-25 06:04:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 252 states have (on average 1.2857142857142858) internal successors, (324), 276 states have internal predecessors, (324), 50 states have call successors, (50), 43 states have call predecessors, (50), 48 states have return successors, (70), 45 states have call predecessors, (70), 50 states have call successors, (70) [2023-12-25 06:04:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 444 transitions. [2023-12-25 06:04:10,234 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 444 transitions. Word has length 65 [2023-12-25 06:04:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:10,234 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 444 transitions. [2023-12-25 06:04:10,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 06:04:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 444 transitions. [2023-12-25 06:04:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-25 06:04:10,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:10,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:10,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:10,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:10,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:10,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2007615782, now seen corresponding path program 1 times [2023-12-25 06:04:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909337152] [2023-12-25 06:04:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:10,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:10,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:10,441 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:10,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:04:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:10,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:04:10,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 06:04:10,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:10,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909337152] [2023-12-25 06:04:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909337152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:04:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233786852] [2023-12-25 06:04:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:04:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:04:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:04:10,642 INFO L87 Difference]: Start difference. First operand 351 states and 444 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:04:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:10,825 INFO L93 Difference]: Finished difference Result 1056 states and 1350 transitions. [2023-12-25 06:04:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:04:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2023-12-25 06:04:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:10,829 INFO L225 Difference]: With dead ends: 1056 [2023-12-25 06:04:10,829 INFO L226 Difference]: Without dead ends: 707 [2023-12-25 06:04:10,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:04:10,831 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 38 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:10,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 368 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:04:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-25 06:04:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2023-12-25 06:04:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 501 states have (on average 1.2674650698602794) internal successors, (635), 545 states have internal predecessors, (635), 97 states have call successors, (97), 86 states have call predecessors, (97), 96 states have return successors, (144), 90 states have call predecessors, (144), 97 states have call successors, (144) [2023-12-25 06:04:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 876 transitions. [2023-12-25 06:04:10,907 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 876 transitions. Word has length 69 [2023-12-25 06:04:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:10,908 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 876 transitions. [2023-12-25 06:04:10,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 06:04:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 876 transitions. [2023-12-25 06:04:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 06:04:10,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:10,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:10,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-25 06:04:11,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:11,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:11,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1064709730, now seen corresponding path program 1 times [2023-12-25 06:04:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:11,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126273695] [2023-12-25 06:04:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:11,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:11,123 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:11,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 06:04:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:11,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:04:11,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:04:11,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:04:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 06:04:11,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126273695] [2023-12-25 06:04:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126273695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:04:11,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:04:11,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-25 06:04:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165961062] [2023-12-25 06:04:11,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:04:11,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:04:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:04:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:04:11,758 INFO L87 Difference]: Start difference. First operand 695 states and 876 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-25 06:04:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:13,045 INFO L93 Difference]: Finished difference Result 1933 states and 2640 transitions. [2023-12-25 06:04:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:04:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 73 [2023-12-25 06:04:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:13,052 INFO L225 Difference]: With dead ends: 1933 [2023-12-25 06:04:13,053 INFO L226 Difference]: Without dead ends: 1318 [2023-12-25 06:04:13,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:04:13,057 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 516 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:13,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 506 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:04:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-12-25 06:04:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1282. [2023-12-25 06:04:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 917 states have (on average 1.2649945474372954) internal successors, (1160), 994 states have internal predecessors, (1160), 180 states have call successors, (180), 162 states have call predecessors, (180), 184 states have return successors, (377), 172 states have call predecessors, (377), 180 states have call successors, (377) [2023-12-25 06:04:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1717 transitions. [2023-12-25 06:04:13,229 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1717 transitions. Word has length 73 [2023-12-25 06:04:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:13,230 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1717 transitions. [2023-12-25 06:04:13,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-25 06:04:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1717 transitions. [2023-12-25 06:04:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-25 06:04:13,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:13,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:13,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:13,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:13,437 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:13,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1751741837, now seen corresponding path program 1 times [2023-12-25 06:04:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129920128] [2023-12-25 06:04:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:13,439 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:13,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 06:04:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:13,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:04:13,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 06:04:13,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:04:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:04:14,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129920128] [2023-12-25 06:04:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129920128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:04:14,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:04:14,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-12-25 06:04:14,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576191215] [2023-12-25 06:04:14,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:04:14,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:04:14,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:04:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:04:14,204 INFO L87 Difference]: Start difference. First operand 1282 states and 1717 transitions. Second operand has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 17 states have internal predecessors, (118), 11 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-25 06:04:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:15,342 INFO L93 Difference]: Finished difference Result 2631 states and 3697 transitions. [2023-12-25 06:04:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:04:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 17 states have internal predecessors, (118), 11 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) Word has length 112 [2023-12-25 06:04:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:15,349 INFO L225 Difference]: With dead ends: 2631 [2023-12-25 06:04:15,350 INFO L226 Difference]: Without dead ends: 1429 [2023-12-25 06:04:15,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:04:15,354 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 449 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:15,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 759 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:04:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2023-12-25 06:04:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1309. [2023-12-25 06:04:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 939 states have (on average 1.2364217252396166) internal successors, (1161), 1011 states have internal predecessors, (1161), 185 states have call successors, (185), 168 states have call predecessors, (185), 184 states have return successors, (260), 170 states have call predecessors, (260), 185 states have call successors, (260) [2023-12-25 06:04:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1606 transitions. [2023-12-25 06:04:15,466 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1606 transitions. Word has length 112 [2023-12-25 06:04:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:15,467 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1606 transitions. [2023-12-25 06:04:15,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 17 states have internal predecessors, (118), 11 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-25 06:04:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1606 transitions. [2023-12-25 06:04:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-25 06:04:15,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:04:15,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:15,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 06:04:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:15,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:04:15,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:04:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -604063413, now seen corresponding path program 1 times [2023-12-25 06:04:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:04:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45195363] [2023-12-25 06:04:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:04:15,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:04:15,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:04:15,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:04:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:04:15,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:04:15,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:04:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:04:15,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:04:15,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:04:15,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45195363] [2023-12-25 06:04:15,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45195363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:04:15,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:04:15,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:04:15,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075147826] [2023-12-25 06:04:15,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:04:15,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:04:15,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:04:15,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:04:15,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:15,818 INFO L87 Difference]: Start difference. First operand 1309 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:04:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:04:15,903 INFO L93 Difference]: Finished difference Result 1596 states and 1951 transitions. [2023-12-25 06:04:15,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 06:04:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-12-25 06:04:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:04:15,905 INFO L225 Difference]: With dead ends: 1596 [2023-12-25 06:04:15,905 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 06:04:15,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:04:15,917 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:04:15,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 203 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:04:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 06:04:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 06:04:15,917 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) [2023-12-25 06:04:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 06:04:15,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2023-12-25 06:04:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:04:15,918 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 06:04:15,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-25 06:04:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 06:04:15,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 06:04:15,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:04:15,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 06:04:16,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:04:16,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 06:04:17,504 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 278 285) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 278 285) the Hoare annotation is: true [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 168 174) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 168 174) the Hoare annotation is: true [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point L946-1(lines 942 953) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 942 953) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (= ~methaneLevelCritical~0 (_ bv0 32))) (.cse2 (not (= |old(~methaneLevelCritical~0)| (_ bv0 32))))) (and (or .cse0 .cse1 (not (= ~waterLevel~0 (_ bv2 32))) .cse2) (or (not (= (_ bv0 32) ~pumpRunning~0)) .cse0 .cse1 .cse2 (not (= ~waterLevel~0 (_ bv1 32)))))) [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 942 953) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point L480(lines 455 484) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 455 484) no Hoare annotation was computed. [2023-12-25 06:04:17,505 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2023-12-25 06:04:17,506 INFO L899 garLoopResultBuilder]: For program point L469(lines 469 473) no Hoare annotation was computed. [2023-12-25 06:04:17,506 INFO L902 garLoopResultBuilder]: At program point L469-1(lines 469 473) the Hoare annotation is: true [2023-12-25 06:04:17,506 INFO L902 garLoopResultBuilder]: At program point L465-2(lines 465 479) the Hoare annotation is: true [2023-12-25 06:04:17,506 INFO L902 garLoopResultBuilder]: At program point L461(line 461) the Hoare annotation is: true [2023-12-25 06:04:17,506 INFO L899 garLoopResultBuilder]: For program point L461-1(line 461) no Hoare annotation was computed. [2023-12-25 06:04:17,506 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 455 484) the Hoare annotation is: true [2023-12-25 06:04:17,506 INFO L899 garLoopResultBuilder]: For program point L155-1(lines 155 161) no Hoare annotation was computed. [2023-12-25 06:04:17,506 INFO L895 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse2 (not (= (_ bv2 32) |old(~waterLevel~0)|))) (.cse0 (not (= ~systemActive~0 (_ bv1 32))))) (and (or .cse0 .cse1 (not (= (_ bv1 32) |old(~waterLevel~0)|))) (or .cse2 .cse0 .cse1) (or .cse2 .cse0 (and (= |timeShift_processEnvironment_~tmp~3#1| (_ bv0 32)) (= ~waterLevel~0 (_ bv1 32)))))) [2023-12-25 06:04:17,506 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse2 (not (= (_ bv2 32) |old(~waterLevel~0)|))) (.cse0 (not (= ~systemActive~0 (_ bv1 32))))) (and (or .cse0 .cse1 (not (= (_ bv1 32) |old(~waterLevel~0)|))) (or .cse2 .cse0 .cse1) (or .cse2 .cse0 (not (= ~methaneLevelCritical~0 (_ bv0 32)))) (or .cse2 .cse0 (= ~waterLevel~0 (_ bv1 32))))) [2023-12-25 06:04:17,506 INFO L895 garLoopResultBuilder]: At program point L234(line 234) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse2 (not (= (_ bv2 32) |old(~waterLevel~0)|))) (.cse0 (not (= ~systemActive~0 (_ bv1 32))))) (and (or .cse0 .cse1 (not (= (_ bv1 32) |old(~waterLevel~0)|))) (or .cse2 .cse0 .cse1) (or .cse2 .cse0 (= ~waterLevel~0 (_ bv1 32))))) [2023-12-25 06:04:17,506 INFO L899 garLoopResultBuilder]: For program point L234-1(line 234) no Hoare annotation was computed. [2023-12-25 06:04:17,506 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse6 (= ~systemActive~0 (_ bv1 32))) (.cse5 (= (_ bv2 32) |old(~waterLevel~0)|)) (.cse7 (= (_ bv0 32) ~pumpRunning~0))) (let ((.cse1 (and (= ~waterLevel~0 (_ bv1 32)) .cse7)) (.cse0 (not .cse5)) (.cse2 (not .cse6)) (.cse4 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse3 (and (= ~waterLevel~0 (_ bv2 32)) .cse5 .cse6 .cse7))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse4 (not (= (_ bv1 32) |old(~waterLevel~0)|))) (or .cse0 .cse2 .cse4 .cse3)))) [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L247-1(lines 228 252) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 147 166) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 244) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 144 167) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse0 (= (_ bv0 32) ~pumpRunning~0)) (.cse3 (not (= (_ bv2 32) |old(~waterLevel~0)|))) (.cse1 (not (= ~systemActive~0 (_ bv1 32))))) (and (or (and (= ~waterLevel~0 (_ bv1 32)) .cse0) .cse1 .cse2 (not (= (_ bv1 32) |old(~waterLevel~0)|))) (or .cse3 .cse1 .cse2 .cse0) (or .cse3 (= ~waterLevel~0 (_ bv2 32)) .cse1))) [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L922(lines 922 926) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L922-2(lines 918 929) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L402(lines 402 408) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L398(lines 398 411) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point L398-1(lines 390 414) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 144 167) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-12-25 06:04:17,507 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2023-12-25 06:04:17,508 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2023-12-25 06:04:17,508 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 94 100) no Hoare annotation was computed. [2023-12-25 06:04:17,508 INFO L899 garLoopResultBuilder]: For program point L536(lines 536 543) no Hoare annotation was computed. [2023-12-25 06:04:17,511 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (let ((.cse0 (= ~systemActive~0 (_ bv1 32))) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| (_ bv0 32)))) (or (and (= ~waterLevel~0 (_ bv2 32)) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 (_ bv1 32)) .cse1 (= (_ bv0 32) ~pumpRunning~0)))) [2023-12-25 06:04:17,512 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse0 (= ~systemActive~0 (_ bv1 32))) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| (_ bv0 32)))) (or (and (= ~waterLevel~0 (_ bv2 32)) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 (_ bv1 32)) .cse1 (= (_ bv0 32) ~pumpRunning~0)))) [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L536-2(lines 536 543) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 116) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (let ((.cse0 (= ~systemActive~0 (_ bv1 32))) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| (_ bv0 32)))) (or (and (= ~waterLevel~0 (_ bv2 32)) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 (_ bv1 32)) .cse1 (= (_ bv0 32) ~pumpRunning~0)))) [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 117) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse0 (= ~systemActive~0 (_ bv1 32))) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| (_ bv0 32)))) (or (and (= ~waterLevel~0 (_ bv2 32)) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 (_ bv1 32)) .cse1 (= (_ bv0 32) ~pumpRunning~0)))) [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L125(lines 64 129) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L899 garLoopResultBuilder]: For program point L351(lines 351 355) no Hoare annotation was computed. [2023-12-25 06:04:17,512 INFO L895 garLoopResultBuilder]: At program point L190(line 190) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32))))) (and (or .cse0 (and (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| (_ bv1 32)) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| (_ bv0 32)) (= (_ bv0 32) ~pumpRunning~0)) .cse1 (not (= ~waterLevel~0 (_ bv1 32)))) (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse1))) [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L351-2(lines 351 355) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 192) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 197) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 176 200) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse2 (= (_ bv0 32) ~pumpRunning~0))) (and (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse1 .cse2) (or .cse0 .cse1 (not (= ~waterLevel~0 (_ bv1 32))) .cse2))) [2023-12-25 06:04:17,513 INFO L895 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32))))) (and (or .cse0 .cse1 (not (= ~waterLevel~0 (_ bv1 32)))) (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse1))) [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point isHighWaterSensorDry_returnLabel#1(lines 995 1008) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L195-1(lines 176 200) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 176 200) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 274) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L895 garLoopResultBuilder]: At program point L266(line 266) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32))))) (and (or .cse0 .cse1 (not (= ~waterLevel~0 (_ bv1 32)))) (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse1 (and (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| (_ bv0 32)) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| (_ bv1 32)) (= (_ bv0 32) ~pumpRunning~0))))) [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L268-2(lines 261 277) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L266-1(line 266) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point L999(lines 999 1005) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 930 941) no Hoare annotation was computed. [2023-12-25 06:04:17,513 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 930 941) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32))))) (and (or (not (= (_ bv0 32) ~pumpRunning~0)) .cse0 (not (= (_ bv1 32) |old(~waterLevel~0)|)) (= ~waterLevel~0 (_ bv1 32))) (or (not (= (_ bv2 32) |old(~waterLevel~0)|)) (= ~waterLevel~0 (_ bv2 32)) .cse0))) [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L934-1(lines 930 941) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (= (_ bv0 32) ~pumpRunning~0))) (and (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) (not (= |old(~pumpRunning~0)| (_ bv0 32))) .cse1) (or .cse0 (not (= ~waterLevel~0 (_ bv1 32))) .cse1))) [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 202 226) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L370(lines 370 374) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L370-2(lines 370 374) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 202 226) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse1 (not (= |old(~pumpRunning~0)| (_ bv0 32)))) (.cse2 (= (_ bv0 32) ~pumpRunning~0))) (and (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse1 .cse2) (or .cse0 .cse1 (not (= ~waterLevel~0 (_ bv1 32))) .cse2))) [2023-12-25 06:04:17,514 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 (_ bv1 32))))) (and (or .cse0 (not (= ~waterLevel~0 (_ bv1 32)))) (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) (not (= |old(~pumpRunning~0)| (_ bv0 32)))))) [2023-12-25 06:04:17,514 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse1 (not (= ~waterLevel~0 (_ bv1 32)))) (.cse0 (not (= ~systemActive~0 (_ bv1 32)))) (.cse2 (not (= |old(~pumpRunning~0)| (_ bv0 32))))) (and (or .cse0 .cse1 (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| (_ bv1 32))) (or .cse0 .cse2 .cse1) (or .cse0 (not (= ~waterLevel~0 (_ bv2 32))) .cse2))) [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 218) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 223) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 202 226) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 286 296) no Hoare annotation was computed. [2023-12-25 06:04:17,514 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 286 296) the Hoare annotation is: true [2023-12-25 06:04:17,516 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:04:17,518 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:04:17,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:04:17 BoogieIcfgContainer [2023-12-25 06:04:17,526 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:04:17,527 INFO L158 Benchmark]: Toolchain (without parser) took 15370.53ms. Allocated memory was 241.2MB in the beginning and 348.1MB in the end (delta: 107.0MB). Free memory was 183.2MB in the beginning and 175.8MB in the end (delta: 7.4MB). Peak memory consumption was 115.8MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,527 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:04:17,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 835.88ms. Allocated memory is still 241.2MB. Free memory was 183.2MB in the beginning and 156.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.29ms. Allocated memory is still 241.2MB. Free memory was 156.4MB in the beginning and 153.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,528 INFO L158 Benchmark]: Boogie Preprocessor took 86.59ms. Allocated memory is still 241.2MB. Free memory was 153.9MB in the beginning and 151.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,528 INFO L158 Benchmark]: RCFGBuilder took 792.41ms. Allocated memory is still 241.2MB. Free memory was 151.6MB in the beginning and 190.6MB in the end (delta: -39.0MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,528 INFO L158 Benchmark]: TraceAbstraction took 13516.94ms. Allocated memory was 241.2MB in the beginning and 348.1MB in the end (delta: 107.0MB). Free memory was 189.5MB in the beginning and 175.8MB in the end (delta: 13.7MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. [2023-12-25 06:04:17,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 835.88ms. Allocated memory is still 241.2MB. Free memory was 183.2MB in the beginning and 156.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 119.29ms. Allocated memory is still 241.2MB. Free memory was 156.4MB in the beginning and 153.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.59ms. Allocated memory is still 241.2MB. Free memory was 153.9MB in the beginning and 151.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 792.41ms. Allocated memory is still 241.2MB. Free memory was 151.6MB in the beginning and 190.6MB in the end (delta: -39.0MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. * TraceAbstraction took 13516.94ms. Allocated memory was 241.2MB in the beginning and 348.1MB in the end (delta: 107.0MB). Free memory was 189.5MB in the beginning and 175.8MB in the end (delta: 13.7MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [58] - GenericResultAtLocation [Line: 130]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [130] - GenericResultAtLocation [Line: 388]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [388] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [415] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [453] - GenericResultAtLocation [Line: 549]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [549] - GenericResultAtLocation [Line: 915]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [915] * 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: 54]: 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 10 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.4s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1718 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1653 mSDsluCounter, 4109 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2867 mSDsCounter, 592 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3848 IncrementalHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 592 mSolverCounterUnsat, 1242 mSDtfsCounter, 3848 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 976 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1309occurred in iteration=14, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 247 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 2169 PreInvPairs, 2216 NumberOfFragments, 687 HoareAnnotationTreeSize, 2169 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FormulaSimplificationsInter, 1664 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 762 NumberOfCodeBlocks, 762 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 1981 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1853 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 237/269 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: 74]: Loop Invariant Derived loop invariant: ((((waterLevel == 2) && (systemActive == 1)) && (splverifierCounter == 0)) || ((((systemActive == 1) && (waterLevel == 1)) && (splverifierCounter == 0)) && (0 == pumpRunning))) - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-25 06:04:17,563 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...