/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/email_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 05:48:15,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 05:48:15,928 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 05:48:15,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 05:48:15,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 05:48:15,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 05:48:15,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 05:48:15,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 05:48:15,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 05:48:15,950 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 05:48:15,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 05:48:15,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 05:48:15,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 05:48:15,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 05:48:15,951 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 05:48:15,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 05:48:15,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 05:48:15,952 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 05:48:15,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 05:48:15,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 05:48:15,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 05:48:15,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 05:48:15,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 05:48:15,954 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 05:48:15,954 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 05:48:15,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 05:48:15,954 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 05:48:15,954 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 05:48:15,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 05:48:15,955 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 05:48:15,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 05:48:15,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 05:48:15,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 05:48:15,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 05:48:15,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 05:48:15,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 05:48:15,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 05:48:15,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 05:48:15,956 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 05:48:15,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 05:48:15,958 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 05:48:15,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 05:48:16,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 05:48:16,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 05:48:16,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 05:48:16,121 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 05:48:16,121 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 05:48:16,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2023-12-25 05:48:17,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 05:48:17,519 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 05:48:17,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2023-12-25 05:48:17,538 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae80adb3/08f8f80f97404fe89b25069c4f6ed086/FLAGdc41171c4 [2023-12-25 05:48:17,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae80adb3/08f8f80f97404fe89b25069c4f6ed086 [2023-12-25 05:48:17,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 05:48:17,559 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 05:48:17,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 05:48:17,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 05:48:17,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 05:48:17,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:48:17" (1/1) ... [2023-12-25 05:48:17,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ca3bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:17, skipping insertion in model container [2023-12-25 05:48:17,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:48:17" (1/1) ... [2023-12-25 05:48:17,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 05:48:17,775 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/email_spec4_product19.cil.c[1542,1555] [2023-12-25 05:48:18,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:48:18,049 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-25 05:48:18,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 05:48:18,073 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/email_spec4_product19.cil.c[1542,1555] [2023-12-25 05:48:18,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:48:18,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 05:48:18,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-25 05:48:18,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [57] [2023-12-25 05:48:18,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [98] [2023-12-25 05:48:18,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [136] [2023-12-25 05:48:18,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [502] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [802] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1018] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1319] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1336] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1434] [2023-12-25 05:48:18,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2501] [2023-12-25 05:48:18,178 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/email_spec4_product19.cil.c[1542,1555] [2023-12-25 05:48:18,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:48:18,252 INFO L206 MainTranslator]: Completed translation [2023-12-25 05:48:18,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18 WrapperNode [2023-12-25 05:48:18,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 05:48:18,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 05:48:18,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 05:48:18,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 05:48:18,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,321 INFO L138 Inliner]: procedures = 129, calls = 185, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 932 [2023-12-25 05:48:18,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 05:48:18,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 05:48:18,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 05:48:18,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 05:48:18,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,363 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-25 05:48:18,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 05:48:18,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 05:48:18,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 05:48:18,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 05:48:18,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (1/1) ... [2023-12-25 05:48:18,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 05:48:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 05:48:18,480 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 05:48:18,496 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 05:48:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-25 05:48:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-25 05:48:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-25 05:48:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-25 05:48:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-25 05:48:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-25 05:48:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-25 05:48:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-25 05:48:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-25 05:48:18,525 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-25 05:48:18,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-25 05:48:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-25 05:48:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-25 05:48:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-25 05:48:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-25 05:48:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 05:48:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 05:48:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-25 05:48:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-25 05:48:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-25 05:48:18,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-25 05:48:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-25 05:48:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-25 05:48:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-25 05:48:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-25 05:48:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-25 05:48:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-25 05:48:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 05:48:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 05:48:18,706 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 05:48:18,708 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 05:48:19,274 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 05:48:19,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 05:48:19,367 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 05:48:19,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:48:19 BoogieIcfgContainer [2023-12-25 05:48:19,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 05:48:19,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 05:48:19,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 05:48:19,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 05:48:19,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:48:17" (1/3) ... [2023-12-25 05:48:19,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10325128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:48:19, skipping insertion in model container [2023-12-25 05:48:19,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:48:18" (2/3) ... [2023-12-25 05:48:19,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10325128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:48:19, skipping insertion in model container [2023-12-25 05:48:19,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:48:19" (3/3) ... [2023-12-25 05:48:19,374 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2023-12-25 05:48:19,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 05:48:19,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 05:48:19,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 05:48:19,436 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;@79c8ed62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 05:48:19,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 05:48:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 217 states have (on average 1.599078341013825) internal successors, (347), 219 states have internal predecessors, (347), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-25 05:48:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 05:48:19,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:19,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-12-25 05:48:19,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:19,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -613452107, now seen corresponding path program 1 times [2023-12-25 05:48:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226206305] [2023-12-25 05:48:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:19,487 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 05:48:19,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:19,516 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 05:48:19,529 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 05:48:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:19,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 05:48:19,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 05:48:19,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:19,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226206305] [2023-12-25 05:48:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226206305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:19,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:19,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 05:48:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882414948] [2023-12-25 05:48:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 05:48:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 05:48:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 05:48:19,847 INFO L87 Difference]: Start difference. First operand has 280 states, 217 states have (on average 1.599078341013825) internal successors, (347), 219 states have internal predecessors, (347), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:19,946 INFO L93 Difference]: Finished difference Result 415 states and 633 transitions. [2023-12-25 05:48:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 05:48:19,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2023-12-25 05:48:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:19,963 INFO L225 Difference]: With dead ends: 415 [2023-12-25 05:48:19,964 INFO L226 Difference]: Without dead ends: 277 [2023-12-25 05:48:19,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 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 05:48:19,975 INFO L413 NwaCegarLoop]: 416 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, 416 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 05:48:19,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 416 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-25 05:48:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-12-25 05:48:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 215 states have (on average 1.5813953488372092) internal successors, (340), 216 states have internal predecessors, (340), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-25 05:48:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 427 transitions. [2023-12-25 05:48:20,052 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 427 transitions. Word has length 86 [2023-12-25 05:48:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:20,053 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 427 transitions. [2023-12-25 05:48:20,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 427 transitions. [2023-12-25 05:48:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-25 05:48:20,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:20,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-25 05:48:20,085 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 (2)] Ended with exit code 0 [2023-12-25 05:48:20,266 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 05:48:20,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:20,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1059923735, now seen corresponding path program 1 times [2023-12-25 05:48:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939134843] [2023-12-25 05:48:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:20,269 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 05:48:20,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:20,273 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 05:48:20,302 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 05:48:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:20,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:48:20,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 05:48:20,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:20,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939134843] [2023-12-25 05:48:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939134843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:20,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:20,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513106660] [2023-12-25 05:48:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:20,593 INFO L87 Difference]: Start difference. First operand 277 states and 427 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:20,697 INFO L93 Difference]: Finished difference Result 549 states and 848 transitions. [2023-12-25 05:48:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 87 [2023-12-25 05:48:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:20,700 INFO L225 Difference]: With dead ends: 549 [2023-12-25 05:48:20,701 INFO L226 Difference]: Without dead ends: 279 [2023-12-25 05:48:20,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:20,703 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 8 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:20,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1605 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:20,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-25 05:48:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-25 05:48:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 218 states have internal predecessors, (341), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (45), 43 states have call predecessors, (45), 43 states have call successors, (45) [2023-12-25 05:48:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 430 transitions. [2023-12-25 05:48:20,716 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 430 transitions. Word has length 87 [2023-12-25 05:48:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 430 transitions. [2023-12-25 05:48:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 430 transitions. [2023-12-25 05:48:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-25 05:48:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:20,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:20,724 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 (3)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:20,924 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 05:48:20,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 904905731, now seen corresponding path program 1 times [2023-12-25 05:48:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642515710] [2023-12-25 05:48:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:20,926 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 05:48:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:20,929 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 05:48:20,931 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 05:48:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:21,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:48:21,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 05:48:21,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:21,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642515710] [2023-12-25 05:48:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642515710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:21,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60830858] [2023-12-25 05:48:21,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:21,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:21,178 INFO L87 Difference]: Start difference. First operand 279 states and 430 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:21,279 INFO L93 Difference]: Finished difference Result 551 states and 852 transitions. [2023-12-25 05:48:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:21,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 88 [2023-12-25 05:48:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:21,281 INFO L225 Difference]: With dead ends: 551 [2023-12-25 05:48:21,282 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 05:48:21,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:21,283 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 8 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:21,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1591 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 05:48:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-25 05:48:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 217 states have (on average 1.576036866359447) internal successors, (342), 220 states have internal predecessors, (342), 44 states have call successors, (44), 17 states have call predecessors, (44), 19 states have return successors, (49), 43 states have call predecessors, (49), 43 states have call successors, (49) [2023-12-25 05:48:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 435 transitions. [2023-12-25 05:48:21,294 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 435 transitions. Word has length 88 [2023-12-25 05:48:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:21,294 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 435 transitions. [2023-12-25 05:48:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 435 transitions. [2023-12-25 05:48:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-25 05:48:21,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:21,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:21,317 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 05:48:21,502 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 05:48:21,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:21,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -749627357, now seen corresponding path program 1 times [2023-12-25 05:48:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228468213] [2023-12-25 05:48:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:21,503 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 05:48:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:21,505 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 05:48:21,512 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 05:48:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:21,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:48:21,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 05:48:21,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:21,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228468213] [2023-12-25 05:48:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228468213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68868900] [2023-12-25 05:48:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:21,720 INFO L87 Difference]: Start difference. First operand 281 states and 435 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:21,816 INFO L93 Difference]: Finished difference Result 543 states and 842 transitions. [2023-12-25 05:48:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 89 [2023-12-25 05:48:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:21,820 INFO L225 Difference]: With dead ends: 543 [2023-12-25 05:48:21,820 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 05:48:21,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:21,824 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 8 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:21,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1605 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 05:48:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-25 05:48:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 217 states have (on average 1.576036866359447) internal successors, (342), 220 states have internal predecessors, (342), 44 states have call successors, (44), 17 states have call predecessors, (44), 19 states have return successors, (48), 43 states have call predecessors, (48), 43 states have call successors, (48) [2023-12-25 05:48:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 434 transitions. [2023-12-25 05:48:21,838 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 434 transitions. Word has length 89 [2023-12-25 05:48:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:21,839 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 434 transitions. [2023-12-25 05:48:21,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 434 transitions. [2023-12-25 05:48:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 05:48:21,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:21,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:21,860 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 05:48:22,052 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 05:48:22,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:22,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 926233179, now seen corresponding path program 2 times [2023-12-25 05:48:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410723215] [2023-12-25 05:48:22,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 05:48:22,054 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 05:48:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:22,057 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 05:48:22,076 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 05:48:22,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 05:48:22,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 05:48:22,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:48:22,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 05:48:22,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:22,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410723215] [2023-12-25 05:48:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410723215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 05:48:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220539979] [2023-12-25 05:48:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:22,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 05:48:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 05:48:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 05:48:22,342 INFO L87 Difference]: Start difference. First operand 281 states and 434 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:22,710 INFO L93 Difference]: Finished difference Result 546 states and 846 transitions. [2023-12-25 05:48:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 05:48:22,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 90 [2023-12-25 05:48:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:22,716 INFO L225 Difference]: With dead ends: 546 [2023-12-25 05:48:22,716 INFO L226 Difference]: Without dead ends: 544 [2023-12-25 05:48:22,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-25 05:48:22,717 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 368 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:22,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 2706 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 05:48:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-25 05:48:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 541. [2023-12-25 05:48:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 422 states have (on average 1.585308056872038) internal successors, (669), 425 states have internal predecessors, (669), 82 states have call successors, (82), 33 states have call predecessors, (82), 36 states have return successors, (91), 82 states have call predecessors, (91), 80 states have call successors, (91) [2023-12-25 05:48:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 842 transitions. [2023-12-25 05:48:22,735 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 842 transitions. Word has length 90 [2023-12-25 05:48:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:22,736 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 842 transitions. [2023-12-25 05:48:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 842 transitions. [2023-12-25 05:48:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 05:48:22,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:22,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:22,744 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 05:48:22,941 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 05:48:22,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:22,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1092006200, now seen corresponding path program 1 times [2023-12-25 05:48:22,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:22,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193108998] [2023-12-25 05:48:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:22,943 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 05:48:22,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:22,944 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 05:48:22,979 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 05:48:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:23,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:48:23,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 05:48:23,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:23,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193108998] [2023-12-25 05:48:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193108998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:23,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718469940] [2023-12-25 05:48:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:23,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:23,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:23,194 INFO L87 Difference]: Start difference. First operand 541 states and 842 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:23,313 INFO L93 Difference]: Finished difference Result 1065 states and 1661 transitions. [2023-12-25 05:48:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 91 [2023-12-25 05:48:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:23,317 INFO L225 Difference]: With dead ends: 1065 [2023-12-25 05:48:23,317 INFO L226 Difference]: Without dead ends: 543 [2023-12-25 05:48:23,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:23,319 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 6 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1607 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-25 05:48:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2023-12-25 05:48:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 423 states have (on average 1.5839243498817968) internal successors, (670), 427 states have internal predecessors, (670), 82 states have call successors, (82), 33 states have call predecessors, (82), 37 states have return successors, (93), 82 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-25 05:48:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 845 transitions. [2023-12-25 05:48:23,336 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 845 transitions. Word has length 91 [2023-12-25 05:48:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:23,336 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 845 transitions. [2023-12-25 05:48:23,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 845 transitions. [2023-12-25 05:48:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 05:48:23,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:23,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:23,350 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 05:48:23,546 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 05:48:23,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:23,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash -698207269, now seen corresponding path program 1 times [2023-12-25 05:48:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:23,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921903360] [2023-12-25 05:48:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:23,548 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 05:48:23,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:23,549 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 05:48:23,551 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 05:48:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:23,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:48:23,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-25 05:48:23,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:23,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921903360] [2023-12-25 05:48:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921903360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:23,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533303310] [2023-12-25 05:48:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:23,759 INFO L87 Difference]: Start difference. First operand 543 states and 845 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:23,852 INFO L93 Difference]: Finished difference Result 802 states and 1247 transitions. [2023-12-25 05:48:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:23,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 92 [2023-12-25 05:48:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:23,854 INFO L225 Difference]: With dead ends: 802 [2023-12-25 05:48:23,854 INFO L226 Difference]: Without dead ends: 283 [2023-12-25 05:48:23,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:23,856 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 8 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:23,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1592 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-25 05:48:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-25 05:48:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 218 states have (on average 1.573394495412844) internal successors, (343), 222 states have internal predecessors, (343), 44 states have call successors, (44), 17 states have call predecessors, (44), 20 states have return successors, (49), 43 states have call predecessors, (49), 43 states have call successors, (49) [2023-12-25 05:48:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 436 transitions. [2023-12-25 05:48:23,873 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 436 transitions. Word has length 92 [2023-12-25 05:48:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:23,874 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 436 transitions. [2023-12-25 05:48:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 436 transitions. [2023-12-25 05:48:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 05:48:23,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:23,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:23,896 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 05:48:24,081 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 05:48:24,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:24,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash 188496620, now seen corresponding path program 1 times [2023-12-25 05:48:24,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823934589] [2023-12-25 05:48:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:24,082 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 05:48:24,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:24,083 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 05:48:24,128 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 05:48:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:24,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:48:24,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-25 05:48:24,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:24,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823934589] [2023-12-25 05:48:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823934589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:24,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:24,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:48:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845294386] [2023-12-25 05:48:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:24,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:48:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:48:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:48:24,332 INFO L87 Difference]: Start difference. First operand 283 states and 436 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:24,422 INFO L93 Difference]: Finished difference Result 545 states and 845 transitions. [2023-12-25 05:48:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:48:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 92 [2023-12-25 05:48:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:24,424 INFO L225 Difference]: With dead ends: 545 [2023-12-25 05:48:24,424 INFO L226 Difference]: Without dead ends: 285 [2023-12-25 05:48:24,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:24,425 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 6 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:24,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1594 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:48:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-25 05:48:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-12-25 05:48:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 219 states have (on average 1.5707762557077625) internal successors, (344), 224 states have internal predecessors, (344), 44 states have call successors, (44), 17 states have call predecessors, (44), 21 states have return successors, (53), 43 states have call predecessors, (53), 43 states have call successors, (53) [2023-12-25 05:48:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 441 transitions. [2023-12-25 05:48:24,432 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 441 transitions. Word has length 92 [2023-12-25 05:48:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:24,433 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 441 transitions. [2023-12-25 05:48:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 05:48:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 441 transitions. [2023-12-25 05:48:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 05:48:24,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:24,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:24,463 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 05:48:24,648 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 05:48:24,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:24,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1656936173, now seen corresponding path program 1 times [2023-12-25 05:48:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040879936] [2023-12-25 05:48:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:24,650 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 05:48:24,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:24,651 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 05:48:24,703 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 05:48:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:24,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:24,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:24,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:24,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:24,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040879936] [2023-12-25 05:48:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040879936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117841263] [2023-12-25 05:48:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:24,871 INFO L87 Difference]: Start difference. First operand 285 states and 441 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:24,914 INFO L93 Difference]: Finished difference Result 419 states and 634 transitions. [2023-12-25 05:48:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2023-12-25 05:48:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:24,915 INFO L225 Difference]: With dead ends: 419 [2023-12-25 05:48:24,915 INFO L226 Difference]: Without dead ends: 287 [2023-12-25 05:48:24,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 05:48:24,917 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:24,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-25 05:48:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-25 05:48:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 221 states have (on average 1.5656108597285068) internal successors, (346), 226 states have internal predecessors, (346), 44 states have call successors, (44), 17 states have call predecessors, (44), 21 states have return successors, (53), 43 states have call predecessors, (53), 43 states have call successors, (53) [2023-12-25 05:48:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 443 transitions. [2023-12-25 05:48:24,924 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 443 transitions. Word has length 93 [2023-12-25 05:48:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:24,924 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 443 transitions. [2023-12-25 05:48:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 443 transitions. [2023-12-25 05:48:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 05:48:24,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:24,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:24,930 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 (10)] Ended with exit code 0 [2023-12-25 05:48:25,130 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 05:48:25,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:25,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 38892046, now seen corresponding path program 1 times [2023-12-25 05:48:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:25,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707381191] [2023-12-25 05:48:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:25,132 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 05:48:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:25,133 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 05:48:25,166 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 05:48:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:25,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:25,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:25,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:25,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:25,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707381191] [2023-12-25 05:48:25,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707381191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:25,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672139300] [2023-12-25 05:48:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:25,333 INFO L87 Difference]: Start difference. First operand 287 states and 443 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:25,374 INFO L93 Difference]: Finished difference Result 600 states and 939 transitions. [2023-12-25 05:48:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-25 05:48:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:25,376 INFO L225 Difference]: With dead ends: 600 [2023-12-25 05:48:25,376 INFO L226 Difference]: Without dead ends: 339 [2023-12-25 05:48:25,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 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 05:48:25,378 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 102 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:25,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 794 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-25 05:48:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 334. [2023-12-25 05:48:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 257 states have (on average 1.5797665369649805) internal successors, (406), 262 states have internal predecessors, (406), 55 states have call successors, (55), 17 states have call predecessors, (55), 21 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2023-12-25 05:48:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 527 transitions. [2023-12-25 05:48:25,388 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 527 transitions. Word has length 98 [2023-12-25 05:48:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:25,388 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 527 transitions. [2023-12-25 05:48:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 527 transitions. [2023-12-25 05:48:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 05:48:25,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:25,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:48:25,397 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 05:48:25,595 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 05:48:25,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:25,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 797031488, now seen corresponding path program 1 times [2023-12-25 05:48:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232480438] [2023-12-25 05:48:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:25,596 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 05:48:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:25,597 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 05:48:25,600 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 05:48:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:25,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 05:48:25,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:25,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:48:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:25,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232480438] [2023-12-25 05:48:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232480438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 05:48:25,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 05:48:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 05:48:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102537343] [2023-12-25 05:48:25,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 05:48:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 05:48:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 05:48:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:48:25,904 INFO L87 Difference]: Start difference. First operand 334 states and 527 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-25 05:48:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:26,115 INFO L93 Difference]: Finished difference Result 796 states and 1304 transitions. [2023-12-25 05:48:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 05:48:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 99 [2023-12-25 05:48:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:26,119 INFO L225 Difference]: With dead ends: 796 [2023-12-25 05:48:26,119 INFO L226 Difference]: Without dead ends: 664 [2023-12-25 05:48:26,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-25 05:48:26,120 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 537 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:26,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1839 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 05:48:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-25 05:48:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 649. [2023-12-25 05:48:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 508 states have (on average 1.6358267716535433) internal successors, (831), 513 states have internal predecessors, (831), 119 states have call successors, (119), 17 states have call predecessors, (119), 21 states have return successors, (140), 118 states have call predecessors, (140), 118 states have call successors, (140) [2023-12-25 05:48:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1090 transitions. [2023-12-25 05:48:26,142 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1090 transitions. Word has length 99 [2023-12-25 05:48:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:26,142 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1090 transitions. [2023-12-25 05:48:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-25 05:48:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1090 transitions. [2023-12-25 05:48:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-25 05:48:26,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:26,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:26,152 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 05:48:26,352 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 05:48:26,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:26,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:26,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1731689027, now seen corresponding path program 1 times [2023-12-25 05:48:26,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:26,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898252643] [2023-12-25 05:48:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:26,354 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 05:48:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:26,355 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 05:48:26,377 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 05:48:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:26,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:26,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:26,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:26,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:26,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898252643] [2023-12-25 05:48:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898252643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280627319] [2023-12-25 05:48:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:26,582 INFO L87 Difference]: Start difference. First operand 649 states and 1090 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:26,648 INFO L93 Difference]: Finished difference Result 1555 states and 2644 transitions. [2023-12-25 05:48:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2023-12-25 05:48:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:26,652 INFO L225 Difference]: With dead ends: 1555 [2023-12-25 05:48:26,652 INFO L226 Difference]: Without dead ends: 966 [2023-12-25 05:48:26,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 05:48:26,655 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 100 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:26,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 835 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-25 05:48:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 961. [2023-12-25 05:48:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 756 states have (on average 1.6441798941798942) internal successors, (1243), 761 states have internal predecessors, (1243), 183 states have call successors, (183), 17 states have call predecessors, (183), 21 states have return successors, (214), 182 states have call predecessors, (214), 182 states have call successors, (214) [2023-12-25 05:48:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1640 transitions. [2023-12-25 05:48:26,685 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1640 transitions. Word has length 105 [2023-12-25 05:48:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:26,686 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1640 transitions. [2023-12-25 05:48:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1640 transitions. [2023-12-25 05:48:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-25 05:48:26,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:26,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:26,703 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 (13)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:26,895 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 05:48:26,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:26,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 498299982, now seen corresponding path program 1 times [2023-12-25 05:48:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511866109] [2023-12-25 05:48:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:26,896 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 05:48:26,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:26,898 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 05:48:26,948 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 05:48:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:27,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:27,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:27,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:27,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511866109] [2023-12-25 05:48:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511866109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600362454] [2023-12-25 05:48:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:27,120 INFO L87 Difference]: Start difference. First operand 961 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:27,200 INFO L93 Difference]: Finished difference Result 2304 states and 3946 transitions. [2023-12-25 05:48:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:27,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-25 05:48:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:27,206 INFO L225 Difference]: With dead ends: 2304 [2023-12-25 05:48:27,207 INFO L226 Difference]: Without dead ends: 1453 [2023-12-25 05:48:27,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 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 05:48:27,210 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 98 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:27,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 819 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-12-25 05:48:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1448. [2023-12-25 05:48:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1148 states have (on average 1.6489547038327526) internal successors, (1893), 1153 states have internal predecessors, (1893), 278 states have call successors, (278), 17 states have call predecessors, (278), 21 states have return successors, (309), 277 states have call predecessors, (309), 277 states have call successors, (309) [2023-12-25 05:48:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2480 transitions. [2023-12-25 05:48:27,270 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2480 transitions. Word has length 106 [2023-12-25 05:48:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:27,271 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2480 transitions. [2023-12-25 05:48:27,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2480 transitions. [2023-12-25 05:48:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 05:48:27,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:27,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:27,283 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 (14)] Ended with exit code 0 [2023-12-25 05:48:27,481 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 05:48:27,481 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:27,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1594337473, now seen corresponding path program 1 times [2023-12-25 05:48:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505491582] [2023-12-25 05:48:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:27,483 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 05:48:27,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:27,484 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 05:48:27,486 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 05:48:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:27,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:27,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:27,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:27,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505491582] [2023-12-25 05:48:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505491582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363462173] [2023-12-25 05:48:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:27,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:27,698 INFO L87 Difference]: Start difference. First operand 1448 states and 2480 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:27,786 INFO L93 Difference]: Finished difference Result 3406 states and 5871 transitions. [2023-12-25 05:48:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-25 05:48:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:27,801 INFO L225 Difference]: With dead ends: 3406 [2023-12-25 05:48:27,801 INFO L226 Difference]: Without dead ends: 2188 [2023-12-25 05:48:27,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 05:48:27,806 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 96 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:27,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 816 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2023-12-25 05:48:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2183. [2023-12-25 05:48:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 1760 states have (on average 1.6534090909090908) internal successors, (2910), 1765 states have internal predecessors, (2910), 401 states have call successors, (401), 17 states have call predecessors, (401), 21 states have return successors, (448), 400 states have call predecessors, (448), 400 states have call successors, (448) [2023-12-25 05:48:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3759 transitions. [2023-12-25 05:48:27,926 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3759 transitions. Word has length 107 [2023-12-25 05:48:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:27,926 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3759 transitions. [2023-12-25 05:48:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3759 transitions. [2023-12-25 05:48:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 05:48:27,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:27,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:27,953 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 (15)] Ended with exit code 0 [2023-12-25 05:48:28,139 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 05:48:28,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:28,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:28,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1339328049, now seen corresponding path program 1 times [2023-12-25 05:48:28,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:28,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148189548] [2023-12-25 05:48:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:28,140 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 05:48:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:28,141 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 05:48:28,142 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 05:48:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:28,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:28,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:28,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:28,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:28,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148189548] [2023-12-25 05:48:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148189548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:28,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634919763] [2023-12-25 05:48:28,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:28,346 INFO L87 Difference]: Start difference. First operand 2183 states and 3759 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:28,487 INFO L93 Difference]: Finished difference Result 5116 states and 8864 transitions. [2023-12-25 05:48:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-25 05:48:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:28,503 INFO L225 Difference]: With dead ends: 5116 [2023-12-25 05:48:28,504 INFO L226 Difference]: Without dead ends: 3360 [2023-12-25 05:48:28,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 05:48:28,511 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 94 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:28,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 816 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2023-12-25 05:48:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3355. [2023-12-25 05:48:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 2753 states have (on average 1.6563748637849618) internal successors, (4560), 2758 states have internal predecessors, (4560), 580 states have call successors, (580), 17 states have call predecessors, (580), 21 states have return successors, (653), 579 states have call predecessors, (653), 579 states have call successors, (653) [2023-12-25 05:48:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5793 transitions. [2023-12-25 05:48:28,657 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5793 transitions. Word has length 108 [2023-12-25 05:48:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:28,658 INFO L495 AbstractCegarLoop]: Abstraction has 3355 states and 5793 transitions. [2023-12-25 05:48:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5793 transitions. [2023-12-25 05:48:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-25 05:48:28,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:28,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:28,688 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 (16)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:28,873 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 05:48:28,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:28,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1800473179, now seen corresponding path program 1 times [2023-12-25 05:48:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599652797] [2023-12-25 05:48:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:28,875 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 05:48:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:28,889 INFO L229 MonitoredProcess]: Starting monitored process 17 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 05:48:28,918 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 (17)] Waiting until timeout for monitored process [2023-12-25 05:48:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:29,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:29,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:29,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:29,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599652797] [2023-12-25 05:48:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599652797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:29,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:29,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:29,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539071290] [2023-12-25 05:48:29,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:29,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:29,121 INFO L87 Difference]: Start difference. First operand 3355 states and 5793 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:29,305 INFO L93 Difference]: Finished difference Result 7971 states and 13818 transitions. [2023-12-25 05:48:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-12-25 05:48:29,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:29,328 INFO L225 Difference]: With dead ends: 7971 [2023-12-25 05:48:29,328 INFO L226 Difference]: Without dead ends: 5330 [2023-12-25 05:48:29,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 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 05:48:29,341 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 92 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 825 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2023-12-25 05:48:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 5325. [2023-12-25 05:48:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5325 states, 4347 states have (on average 1.6450425580860364) internal successors, (7151), 4352 states have internal predecessors, (7151), 956 states have call successors, (956), 17 states have call predecessors, (956), 21 states have return successors, (1073), 955 states have call predecessors, (1073), 955 states have call successors, (1073) [2023-12-25 05:48:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5325 states to 5325 states and 9180 transitions. [2023-12-25 05:48:29,617 INFO L78 Accepts]: Start accepts. Automaton has 5325 states and 9180 transitions. Word has length 109 [2023-12-25 05:48:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:29,618 INFO L495 AbstractCegarLoop]: Abstraction has 5325 states and 9180 transitions. [2023-12-25 05:48:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5325 states and 9180 transitions. [2023-12-25 05:48:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 05:48:29,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:29,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:29,652 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 (17)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 05:48:29,839 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:29,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1720358579, now seen corresponding path program 1 times [2023-12-25 05:48:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269546602] [2023-12-25 05:48:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:29,840 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 05:48:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:29,841 INFO L229 MonitoredProcess]: Starting monitored process 18 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 05:48:29,842 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 (18)] Waiting until timeout for monitored process [2023-12-25 05:48:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:30,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:30,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:30,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:30,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:30,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269546602] [2023-12-25 05:48:30,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269546602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:30,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:30,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599105614] [2023-12-25 05:48:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:30,122 INFO L87 Difference]: Start difference. First operand 5325 states and 9180 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:30,393 INFO L93 Difference]: Finished difference Result 13108 states and 22728 transitions. [2023-12-25 05:48:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:30,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-25 05:48:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:30,448 INFO L225 Difference]: With dead ends: 13108 [2023-12-25 05:48:30,448 INFO L226 Difference]: Without dead ends: 8863 [2023-12-25 05:48:30,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 05:48:30,466 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 90 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:30,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 821 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8863 states. [2023-12-25 05:48:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8863 to 8858. [2023-12-25 05:48:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8858 states, 7274 states have (on average 1.642425075611768) internal successors, (11947), 7279 states have internal predecessors, (11947), 1562 states have call successors, (1562), 17 states have call predecessors, (1562), 21 states have return successors, (1757), 1561 states have call predecessors, (1757), 1561 states have call successors, (1757) [2023-12-25 05:48:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 15266 transitions. [2023-12-25 05:48:30,915 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 15266 transitions. Word has length 110 [2023-12-25 05:48:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:30,915 INFO L495 AbstractCegarLoop]: Abstraction has 8858 states and 15266 transitions. [2023-12-25 05:48:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 15266 transitions. [2023-12-25 05:48:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 05:48:30,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:30,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:30,953 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 (18)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 05:48:31,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:31,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 9796137, now seen corresponding path program 1 times [2023-12-25 05:48:31,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:31,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303877726] [2023-12-25 05:48:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:31,142 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 05:48:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:31,143 INFO L229 MonitoredProcess]: Starting monitored process 19 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 05:48:31,179 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 (19)] Waiting until timeout for monitored process [2023-12-25 05:48:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:31,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:31,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:31,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:31,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303877726] [2023-12-25 05:48:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303877726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:31,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:31,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730415308] [2023-12-25 05:48:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:31,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:31,355 INFO L87 Difference]: Start difference. First operand 8858 states and 15266 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:31,848 INFO L93 Difference]: Finished difference Result 22880 states and 39581 transitions. [2023-12-25 05:48:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-25 05:48:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:31,907 INFO L225 Difference]: With dead ends: 22880 [2023-12-25 05:48:31,907 INFO L226 Difference]: Without dead ends: 15535 [2023-12-25 05:48:31,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 05:48:31,944 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 88 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:31,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 832 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15535 states. [2023-12-25 05:48:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15535 to 15530. [2023-12-25 05:48:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 12743 states have (on average 1.6328964921917917) internal successors, (20808), 12748 states have internal predecessors, (20808), 2765 states have call successors, (2765), 17 states have call predecessors, (2765), 21 states have return successors, (3104), 2764 states have call predecessors, (3104), 2764 states have call successors, (3104) [2023-12-25 05:48:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 26677 transitions. [2023-12-25 05:48:32,670 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 26677 transitions. Word has length 111 [2023-12-25 05:48:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:32,670 INFO L495 AbstractCegarLoop]: Abstraction has 15530 states and 26677 transitions. [2023-12-25 05:48:32,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 26677 transitions. [2023-12-25 05:48:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-25 05:48:32,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:32,696 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:32,714 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 (19)] Ended with exit code 0 [2023-12-25 05:48:32,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 05:48:32,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:32,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 800556372, now seen corresponding path program 1 times [2023-12-25 05:48:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399183753] [2023-12-25 05:48:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:32,903 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 05:48:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:32,904 INFO L229 MonitoredProcess]: Starting monitored process 20 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 05:48:32,924 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 (20)] Waiting until timeout for monitored process [2023-12-25 05:48:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:33,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:33,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:33,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:33,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399183753] [2023-12-25 05:48:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399183753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:33,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:33,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436382754] [2023-12-25 05:48:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:33,117 INFO L87 Difference]: Start difference. First operand 15530 states and 26677 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:34,053 INFO L93 Difference]: Finished difference Result 41047 states and 70841 transitions. [2023-12-25 05:48:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2023-12-25 05:48:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:34,174 INFO L225 Difference]: With dead ends: 41047 [2023-12-25 05:48:34,174 INFO L226 Difference]: Without dead ends: 27650 [2023-12-25 05:48:34,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 05:48:34,220 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 86 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:34,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 819 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27650 states. [2023-12-25 05:48:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27650 to 27645. [2023-12-25 05:48:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27645 states, 22819 states have (on average 1.628993382707393) internal successors, (37172), 22824 states have internal predecessors, (37172), 4804 states have call successors, (4804), 17 states have call predecessors, (4804), 21 states have return successors, (5417), 4803 states have call predecessors, (5417), 4803 states have call successors, (5417) [2023-12-25 05:48:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27645 states to 27645 states and 47393 transitions. [2023-12-25 05:48:35,587 INFO L78 Accepts]: Start accepts. Automaton has 27645 states and 47393 transitions. Word has length 112 [2023-12-25 05:48:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:35,587 INFO L495 AbstractCegarLoop]: Abstraction has 27645 states and 47393 transitions. [2023-12-25 05:48:35,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 27645 states and 47393 transitions. [2023-12-25 05:48:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-25 05:48:35,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:35,615 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:35,632 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 (20)] Ended with exit code 0 [2023-12-25 05:48:35,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 05:48:35,820 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:35,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:35,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1466732651, now seen corresponding path program 1 times [2023-12-25 05:48:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:35,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071099984] [2023-12-25 05:48:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:35,821 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 05:48:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:35,837 INFO L229 MonitoredProcess]: Starting monitored process 21 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 05:48:35,874 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 (21)] Waiting until timeout for monitored process [2023-12-25 05:48:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:36,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:36,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:36,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:36,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071099984] [2023-12-25 05:48:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071099984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84204698] [2023-12-25 05:48:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:36,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:36,075 INFO L87 Difference]: Start difference. First operand 27645 states and 47393 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:37,898 INFO L93 Difference]: Finished difference Result 75239 states and 129498 transitions. [2023-12-25 05:48:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-25 05:48:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:38,093 INFO L225 Difference]: With dead ends: 75239 [2023-12-25 05:48:38,093 INFO L226 Difference]: Without dead ends: 50474 [2023-12-25 05:48:38,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 05:48:38,152 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 84 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:38,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 821 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50474 states. [2023-12-25 05:48:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50474 to 50469. [2023-12-25 05:48:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50469 states, 41928 states have (on average 1.6238790307193283) internal successors, (68086), 41933 states have internal predecessors, (68086), 8519 states have call successors, (8519), 17 states have call predecessors, (8519), 21 states have return successors, (9664), 8518 states have call predecessors, (9664), 8518 states have call successors, (9664) [2023-12-25 05:48:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50469 states to 50469 states and 86269 transitions. [2023-12-25 05:48:40,355 INFO L78 Accepts]: Start accepts. Automaton has 50469 states and 86269 transitions. Word has length 113 [2023-12-25 05:48:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:40,356 INFO L495 AbstractCegarLoop]: Abstraction has 50469 states and 86269 transitions. [2023-12-25 05:48:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 50469 states and 86269 transitions. [2023-12-25 05:48:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 05:48:40,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:40,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:40,405 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 (21)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:40,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 05:48:40,589 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:40,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1724829332, now seen corresponding path program 1 times [2023-12-25 05:48:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141824391] [2023-12-25 05:48:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:40,590 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 05:48:40,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:40,591 INFO L229 MonitoredProcess]: Starting monitored process 22 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 05:48:40,622 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 (22)] Waiting until timeout for monitored process [2023-12-25 05:48:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:40,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:48:40,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 05:48:40,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:48:40,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141824391] [2023-12-25 05:48:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141824391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:48:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:48:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:48:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017334735] [2023-12-25 05:48:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:48:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:48:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:48:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:48:40,820 INFO L87 Difference]: Start difference. First operand 50469 states and 86269 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:48:43,582 INFO L93 Difference]: Finished difference Result 93986 states and 161092 transitions. [2023-12-25 05:48:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:48:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-25 05:48:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:48:44,143 INFO L225 Difference]: With dead ends: 93986 [2023-12-25 05:48:44,144 INFO L226 Difference]: Without dead ends: 93854 [2023-12-25 05:48:44,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 05:48:44,191 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 82 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:48:44,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 819 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:48:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93854 states. [2023-12-25 05:48:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93854 to 93849. [2023-12-25 05:48:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93849 states, 78509 states have (on average 1.6173559719267854) internal successors, (126977), 78514 states have internal predecessors, (126977), 15318 states have call successors, (15318), 17 states have call predecessors, (15318), 21 states have return successors, (17509), 15317 states have call predecessors, (17509), 15317 states have call successors, (17509) [2023-12-25 05:48:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93849 states to 93849 states and 159804 transitions. [2023-12-25 05:48:48,316 INFO L78 Accepts]: Start accepts. Automaton has 93849 states and 159804 transitions. Word has length 114 [2023-12-25 05:48:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:48:48,317 INFO L495 AbstractCegarLoop]: Abstraction has 93849 states and 159804 transitions. [2023-12-25 05:48:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:48:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 93849 states and 159804 transitions. [2023-12-25 05:48:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-25 05:48:48,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:48:48,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:48:48,379 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 (22)] Forceful destruction successful, exit code 0 [2023-12-25 05:48:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 05:48:48,564 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:48:48,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:48:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -178140854, now seen corresponding path program 1 times [2023-12-25 05:48:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:48:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287211069] [2023-12-25 05:48:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:48:48,566 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 05:48:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:48:48,567 INFO L229 MonitoredProcess]: Starting monitored process 23 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 05:48:48,569 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 (23)] Waiting until timeout for monitored process [2023-12-25 05:48:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:48:48,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 05:48:48,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:48:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 05:48:48,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:48:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 05:48:49,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:48:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287211069] [2023-12-25 05:48:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287211069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 05:48:49,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 05:48:49,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-25 05:48:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200491305] [2023-12-25 05:48:49,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 05:48:49,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 05:48:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:48:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 05:48:49,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-25 05:48:49,149 INFO L87 Difference]: Start difference. First operand 93849 states and 159804 transitions. Second operand has 16 states, 16 states have (on average 9.0625) internal successors, (145), 14 states have internal predecessors, (145), 4 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-25 05:49:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:49:00,034 INFO L93 Difference]: Finished difference Result 276022 states and 476635 transitions. [2023-12-25 05:49:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 05:49:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 14 states have internal predecessors, (145), 4 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) Word has length 115 [2023-12-25 05:49:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:49:01,478 INFO L225 Difference]: With dead ends: 276022 [2023-12-25 05:49:01,479 INFO L226 Difference]: Without dead ends: 275895 [2023-12-25 05:49:01,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-25 05:49:01,607 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 941 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-25 05:49:01,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 2568 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-25 05:49:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275895 states. [2023-12-25 05:49:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275895 to 187699. [2023-12-25 05:49:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187699 states, 157021 states have (on average 1.6173569140433446) internal successors, (253959), 157028 states have internal predecessors, (253959), 30634 states have call successors, (30634), 35 states have call predecessors, (30634), 43 states have return successors, (39380), 30635 states have call predecessors, (39380), 30632 states have call successors, (39380) [2023-12-25 05:49:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187699 states to 187699 states and 323973 transitions. [2023-12-25 05:49:13,544 INFO L78 Accepts]: Start accepts. Automaton has 187699 states and 323973 transitions. Word has length 115 [2023-12-25 05:49:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:49:13,545 INFO L495 AbstractCegarLoop]: Abstraction has 187699 states and 323973 transitions. [2023-12-25 05:49:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 14 states have internal predecessors, (145), 4 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-25 05:49:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 187699 states and 323973 transitions. [2023-12-25 05:49:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-25 05:49:13,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:49:13,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:49:13,614 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 (23)] Forceful destruction successful, exit code 0 [2023-12-25 05:49:13,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 05:49:13,814 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:49:13,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:49:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1041236653, now seen corresponding path program 1 times [2023-12-25 05:49:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:49:13,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612023975] [2023-12-25 05:49:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:49:13,815 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 05:49:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:49:13,828 INFO L229 MonitoredProcess]: Starting monitored process 24 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 05:49:13,829 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 (24)] Waiting until timeout for monitored process [2023-12-25 05:49:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:49:14,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 05:49:14,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:49:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 05:49:14,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:49:14,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:49:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612023975] [2023-12-25 05:49:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612023975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:49:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:49:14,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 05:49:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964572057] [2023-12-25 05:49:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:49:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 05:49:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:49:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 05:49:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-25 05:49:14,155 INFO L87 Difference]: Start difference. First operand 187699 states and 323973 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-25 05:49:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:49:21,368 INFO L93 Difference]: Finished difference Result 188115 states and 324604 transitions. [2023-12-25 05:49:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 05:49:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2023-12-25 05:49:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:49:22,449 INFO L225 Difference]: With dead ends: 188115 [2023-12-25 05:49:22,449 INFO L226 Difference]: Without dead ends: 187749 [2023-12-25 05:49:22,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 05:49:22,536 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 601 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 05:49:22,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 2636 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 05:49:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187749 states. [2023-12-25 05:49:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187749 to 187745. [2023-12-25 05:49:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187745 states, 157058 states have (on average 1.6173069821339887) internal successors, (254011), 157065 states have internal predecessors, (254011), 30642 states have call successors, (30642), 37 states have call predecessors, (30642), 44 states have return successors, (39392), 30642 states have call predecessors, (39392), 30640 states have call successors, (39392) [2023-12-25 05:49:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187745 states to 187745 states and 324045 transitions. [2023-12-25 05:49:33,283 INFO L78 Accepts]: Start accepts. Automaton has 187745 states and 324045 transitions. Word has length 116 [2023-12-25 05:49:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:49:33,285 INFO L495 AbstractCegarLoop]: Abstraction has 187745 states and 324045 transitions. [2023-12-25 05:49:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-25 05:49:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 187745 states and 324045 transitions. [2023-12-25 05:49:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-25 05:49:33,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:49:33,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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 05:49:33,358 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 05:49:33,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 05:49:33,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:49:33,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:49:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash -411631160, now seen corresponding path program 1 times [2023-12-25 05:49:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:49:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597498227] [2023-12-25 05:49:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:49:33,559 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 05:49:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:49:33,560 INFO L229 MonitoredProcess]: Starting monitored process 25 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 05:49:33,570 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 (25)] Waiting until timeout for monitored process [2023-12-25 05:49:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:49:33,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:49:33,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:49:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 05:49:33,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:49:33,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:49:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597498227] [2023-12-25 05:49:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597498227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:49:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:49:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:49:33,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380236615] [2023-12-25 05:49:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:49:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:49:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:49:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:49:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:49:33,760 INFO L87 Difference]: Start difference. First operand 187745 states and 324045 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:49:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:49:41,846 INFO L93 Difference]: Finished difference Result 279147 states and 481870 transitions. [2023-12-25 05:49:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:49:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2023-12-25 05:49:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:49:42,780 INFO L225 Difference]: With dead ends: 279147 [2023-12-25 05:49:42,780 INFO L226 Difference]: Without dead ends: 185270 [2023-12-25 05:49:42,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:49:42,999 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 10 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:49:42,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1593 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:49:43,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185270 states. [2023-12-25 05:49:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185270 to 185264. [2023-12-25 05:49:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185264 states, 155029 states have (on average 1.6181295112527334) internal successors, (250857), 154923 states have internal predecessors, (250857), 30193 states have call successors, (30193), 37 states have call predecessors, (30193), 41 states have return successors, (37735), 30303 states have call predecessors, (37735), 30191 states have call successors, (37735) [2023-12-25 05:49:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185264 states to 185264 states and 318785 transitions. [2023-12-25 05:49:53,794 INFO L78 Accepts]: Start accepts. Automaton has 185264 states and 318785 transitions. Word has length 116 [2023-12-25 05:49:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:49:53,794 INFO L495 AbstractCegarLoop]: Abstraction has 185264 states and 318785 transitions. [2023-12-25 05:49:53,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-25 05:49:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 185264 states and 318785 transitions. [2023-12-25 05:49:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-25 05:49:53,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:49:53,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 05:49:53,873 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 (25)] Forceful destruction successful, exit code 0 [2023-12-25 05:49:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 05:49:54,072 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:49:54,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:49:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1999580928, now seen corresponding path program 1 times [2023-12-25 05:49:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:49:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651079575] [2023-12-25 05:49:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:49:54,074 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 05:49:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:49:54,075 INFO L229 MonitoredProcess]: Starting monitored process 26 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 05:49:54,083 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 (26)] Waiting until timeout for monitored process [2023-12-25 05:49:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:49:54,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 05:49:54,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:49:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-25 05:49:54,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:49:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 05:49:54,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:49:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651079575] [2023-12-25 05:49:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651079575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 05:49:54,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 05:49:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-25 05:49:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331342312] [2023-12-25 05:49:54,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 05:49:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 05:49:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:49:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 05:49:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-25 05:49:54,686 INFO L87 Difference]: Start difference. First operand 185264 states and 318785 transitions. Second operand has 16 states, 16 states have (on average 9.8125) internal successors, (157), 14 states have internal predecessors, (157), 3 states have call successors, (26), 5 states have call predecessors, (26), 8 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23)