/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_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 05:41:40,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 05:41:41,005 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 05:41:41,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 05:41:41,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 05:41:41,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 05:41:41,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 05:41:41,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 05:41:41,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 05:41:41,047 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 05:41:41,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 05:41:41,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 05:41:41,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 05:41:41,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 05:41:41,050 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 05:41:41,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 05:41:41,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 05:41:41,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 05:41:41,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 05:41:41,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 05:41:41,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 05:41:41,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 05:41:41,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 05:41:41,053 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 05:41:41,053 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 05:41:41,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 05:41:41,053 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 05:41:41,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 05:41:41,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 05:41:41,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 05:41:41,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 05:41:41,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 05:41:41,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 05:41:41,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 05:41:41,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 05:41:41,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 05:41:41,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 05:41:41,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 05:41:41,056 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 05:41:41,057 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 05:41:41,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 05:41:41,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 05:41:41,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 05:41:41,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 05:41:41,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 05:41:41,058 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 05:41:41,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 05:41:41,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 05:41:41,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 05:41:41,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 05:41:41,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 05:41:41,375 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 05:41:41,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2023-12-25 05:41:42,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 05:41:42,952 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 05:41:42,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2023-12-25 05:41:42,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3981deda0/f17afee350ba48e0aa39ee09300ead48/FLAGcdaec664c [2023-12-25 05:41:43,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3981deda0/f17afee350ba48e0aa39ee09300ead48 [2023-12-25 05:41:43,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 05:41:43,017 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 05:41:43,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 05:41:43,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 05:41:43,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 05:41:43,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:43,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ca4361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43, skipping insertion in model container [2023-12-25 05:41:43,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:43,109 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 05:41:43,489 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_spec1_product15.cil.c[34816,34829] [2023-12-25 05:41:43,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:41:43,690 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-25 05:41:43,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 05:41:43,781 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_spec1_product15.cil.c[34816,34829] [2023-12-25 05:41:43,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:41:43,841 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 05:41:43,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2023-12-25 05:41:43,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1128] [2023-12-25 05:41:43,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1540] [2023-12-25 05:41:43,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1549] [2023-12-25 05:41:43,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1666] [2023-12-25 05:41:43,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1891] [2023-12-25 05:41:43,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2176] [2023-12-25 05:41:43,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [2542] [2023-12-25 05:41:43,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2570] [2023-12-25 05:41:43,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2831] [2023-12-25 05:41:43,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2848] [2023-12-25 05:41:43,881 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_spec1_product15.cil.c[34816,34829] [2023-12-25 05:41:43,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 05:41:43,939 INFO L206 MainTranslator]: Completed translation [2023-12-25 05:41:43,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43 WrapperNode [2023-12-25 05:41:43,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 05:41:43,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 05:41:43,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 05:41:43,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 05:41:43,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:43,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,026 INFO L138 Inliner]: procedures = 127, calls = 182, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 832 [2023-12-25 05:41:44,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 05:41:44,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 05:41:44,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 05:41:44,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 05:41:44,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,075 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 05:41:44,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 05:41:44,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 05:41:44,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 05:41:44,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 05:41:44,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (1/1) ... [2023-12-25 05:41:44,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 05:41:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 05:41:44,179 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 05:41:44,204 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 05:41:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-25 05:41:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-25 05:41:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-25 05:41:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-25 05:41:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-25 05:41:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-25 05:41:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-25 05:41:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-25 05:41:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-25 05:41:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-25 05:41:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-25 05:41:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-25 05:41:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-25 05:41:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-25 05:41:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-25 05:41:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-25 05:41:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-25 05:41:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-25 05:41:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-25 05:41:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-25 05:41:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-25 05:41:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-25 05:41:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-25 05:41:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-25 05:41:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-25 05:41:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-25 05:41:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-25 05:41:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-25 05:41:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 05:41:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 05:41:44,391 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 05:41:44,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 05:41:45,180 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 05:41:45,269 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 05:41:45,269 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 05:41:45,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:41:45 BoogieIcfgContainer [2023-12-25 05:41:45,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 05:41:45,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 05:41:45,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 05:41:45,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 05:41:45,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:41:43" (1/3) ... [2023-12-25 05:41:45,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345b7735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:41:45, skipping insertion in model container [2023-12-25 05:41:45,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:41:43" (2/3) ... [2023-12-25 05:41:45,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345b7735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:41:45, skipping insertion in model container [2023-12-25 05:41:45,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:41:45" (3/3) ... [2023-12-25 05:41:45,278 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2023-12-25 05:41:45,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 05:41:45,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 05:41:45,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 05:41:45,365 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;@4b48b25f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 05:41:45,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 05:41:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 201 states have (on average 1.6119402985074627) internal successors, (324), 205 states have internal predecessors, (324), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-25 05:41:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-25 05:41:45,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:45,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 05:41:45,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:45,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1397232782, now seen corresponding path program 1 times [2023-12-25 05:41:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:45,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563384238] [2023-12-25 05:41:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:45,405 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 05:41:45,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:45,408 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 05:41:45,419 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 05:41:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:45,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 05:41:45,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-25 05:41:45,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:45,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563384238] [2023-12-25 05:41:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563384238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:45,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:45,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 05:41:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229023752] [2023-12-25 05:41:45,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:45,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 05:41:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 05:41:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 05:41:45,858 INFO L87 Difference]: Start difference. First operand has 262 states, 201 states have (on average 1.6119402985074627) internal successors, (324), 205 states have internal predecessors, (324), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:45,966 INFO L93 Difference]: Finished difference Result 379 states and 579 transitions. [2023-12-25 05:41:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 05:41:45,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-12-25 05:41:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:45,988 INFO L225 Difference]: With dead ends: 379 [2023-12-25 05:41:45,989 INFO L226 Difference]: Without dead ends: 259 [2023-12-25 05:41:45,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 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 05:41:46,001 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:46,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-25 05:41:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-12-25 05:41:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 199 states have (on average 1.592964824120603) internal successors, (317), 202 states have internal predecessors, (317), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-25 05:41:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 400 transitions. [2023-12-25 05:41:46,070 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 400 transitions. Word has length 83 [2023-12-25 05:41:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:46,071 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 400 transitions. [2023-12-25 05:41:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 400 transitions. [2023-12-25 05:41:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-25 05:41:46,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:46,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 05:41:46,087 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 05:41:46,277 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 05:41:46,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:46,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2089638371, now seen corresponding path program 1 times [2023-12-25 05:41:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861684380] [2023-12-25 05:41:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:46,280 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 05:41:46,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:46,281 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 05:41:46,306 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 05:41:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:46,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:41:46,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 05:41:46,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:46,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861684380] [2023-12-25 05:41:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861684380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:46,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469815418] [2023-12-25 05:41:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:46,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:46,660 INFO L87 Difference]: Start difference. First operand 259 states and 400 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:46,813 INFO L93 Difference]: Finished difference Result 513 states and 794 transitions. [2023-12-25 05:41:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2023-12-25 05:41:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:46,860 INFO L225 Difference]: With dead ends: 513 [2023-12-25 05:41:46,860 INFO L226 Difference]: Without dead ends: 261 [2023-12-25 05:41:46,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 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 05:41:46,863 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 8 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1509 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-25 05:41:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-25 05:41:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 200 states have (on average 1.59) internal successors, (318), 204 states have internal predecessors, (318), 42 states have call successors, (42), 17 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2023-12-25 05:41:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 403 transitions. [2023-12-25 05:41:46,899 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 403 transitions. Word has length 84 [2023-12-25 05:41:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:46,900 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 403 transitions. [2023-12-25 05:41:46,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 403 transitions. [2023-12-25 05:41:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 05:41:46,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:46,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 05:41:46,915 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 05:41:47,112 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 05:41:47,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:47,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2077948941, now seen corresponding path program 1 times [2023-12-25 05:41:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6277303] [2023-12-25 05:41:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:47,115 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 05:41:47,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:47,116 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 05:41:47,120 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 05:41:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:47,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:41:47,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 05:41:47,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:47,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6277303] [2023-12-25 05:41:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6277303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:47,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:47,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689400692] [2023-12-25 05:41:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:47,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:47,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:47,396 INFO L87 Difference]: Start difference. First operand 261 states and 403 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:47,533 INFO L93 Difference]: Finished difference Result 515 states and 798 transitions. [2023-12-25 05:41:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 85 [2023-12-25 05:41:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:47,537 INFO L225 Difference]: With dead ends: 515 [2023-12-25 05:41:47,537 INFO L226 Difference]: Without dead ends: 263 [2023-12-25 05:41:47,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 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 05:41:47,540 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 8 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1495 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 05:41:47,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1495 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-25 05:41:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-12-25 05:41:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.5870646766169154) internal successors, (319), 206 states have internal predecessors, (319), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2023-12-25 05:41:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 408 transitions. [2023-12-25 05:41:47,570 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 408 transitions. Word has length 85 [2023-12-25 05:41:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:47,572 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 408 transitions. [2023-12-25 05:41:47,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 408 transitions. [2023-12-25 05:41:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 05:41:47,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:47,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-25 05:41:47,585 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 05:41:47,787 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 05:41:47,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:47,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 971420859, now seen corresponding path program 1 times [2023-12-25 05:41:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21320845] [2023-12-25 05:41:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:47,790 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 05:41:47,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:47,791 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 05:41:47,822 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 05:41:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:48,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:41:48,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-25 05:41:48,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:48,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21320845] [2023-12-25 05:41:48,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21320845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:48,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:48,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357142033] [2023-12-25 05:41:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:48,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:48,089 INFO L87 Difference]: Start difference. First operand 263 states and 408 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:48,207 INFO L93 Difference]: Finished difference Result 507 states and 788 transitions. [2023-12-25 05:41:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:48,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2023-12-25 05:41:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:48,211 INFO L225 Difference]: With dead ends: 507 [2023-12-25 05:41:48,212 INFO L226 Difference]: Without dead ends: 263 [2023-12-25 05:41:48,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 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 05:41:48,217 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 8 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:48,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1509 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-25 05:41:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-12-25 05:41:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.5870646766169154) internal successors, (319), 206 states have internal predecessors, (319), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-25 05:41:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 407 transitions. [2023-12-25 05:41:48,236 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 407 transitions. Word has length 86 [2023-12-25 05:41:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:48,236 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 407 transitions. [2023-12-25 05:41:48,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 407 transitions. [2023-12-25 05:41:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-25 05:41:48,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:48,249 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-25 05:41:48,256 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 05:41:48,449 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 05:41:48,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:48,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 561497997, now seen corresponding path program 2 times [2023-12-25 05:41:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:48,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315765390] [2023-12-25 05:41:48,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 05:41:48,451 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 05:41:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:48,453 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 05:41:48,455 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 05:41:48,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 05:41:48,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 05:41:48,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:48,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-25 05:41:48,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:48,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315765390] [2023-12-25 05:41:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315765390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052593880] [2023-12-25 05:41:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:48,656 INFO L87 Difference]: Start difference. First operand 263 states and 407 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:48,700 INFO L93 Difference]: Finished difference Result 379 states and 573 transitions. [2023-12-25 05:41:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-25 05:41:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:48,702 INFO L225 Difference]: With dead ends: 379 [2023-12-25 05:41:48,702 INFO L226 Difference]: Without dead ends: 265 [2023-12-25 05:41:48,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 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 05:41:48,703 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 0 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:48,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-25 05:41:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-25 05:41:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 208 states have internal predecessors, (321), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-25 05:41:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 409 transitions. [2023-12-25 05:41:48,714 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 409 transitions. Word has length 87 [2023-12-25 05:41:48,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:48,714 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 409 transitions. [2023-12-25 05:41:48,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 409 transitions. [2023-12-25 05:41:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 05:41:48,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:48,716 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] [2023-12-25 05:41:48,721 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 05:41:48,921 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 05:41:48,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:48,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1333459328, now seen corresponding path program 1 times [2023-12-25 05:41:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:48,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197454343] [2023-12-25 05:41:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:48,923 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 05:41:48,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:48,925 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 05:41:48,926 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 05:41:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:49,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:41:49,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-25 05:41:49,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:49,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197454343] [2023-12-25 05:41:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197454343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839105626] [2023-12-25 05:41:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:49,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:49,221 INFO L87 Difference]: Start difference. First operand 265 states and 409 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:49,331 INFO L93 Difference]: Finished difference Result 513 states and 795 transitions. [2023-12-25 05:41:49,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:49,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2023-12-25 05:41:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:49,335 INFO L225 Difference]: With dead ends: 513 [2023-12-25 05:41:49,335 INFO L226 Difference]: Without dead ends: 267 [2023-12-25 05:41:49,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 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 05:41:49,337 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 6 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:49,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1511 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-25 05:41:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-25 05:41:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 1.5784313725490196) internal successors, (322), 210 states have internal predecessors, (322), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2023-12-25 05:41:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 412 transitions. [2023-12-25 05:41:49,353 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 412 transitions. Word has length 94 [2023-12-25 05:41:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:49,354 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 412 transitions. [2023-12-25 05:41:49,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 412 transitions. [2023-12-25 05:41:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-25 05:41:49,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:49,356 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:41:49,365 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 (7)] Ended with exit code 0 [2023-12-25 05:41:49,562 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 05:41:49,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:49,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1204465559, now seen corresponding path program 1 times [2023-12-25 05:41:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:49,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581560556] [2023-12-25 05:41:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:49,564 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 05:41:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:49,565 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 05:41:49,569 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 (8)] Waiting until timeout for monitored process [2023-12-25 05:41:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:49,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:41:49,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 05:41:49,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:49,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581560556] [2023-12-25 05:41:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581560556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333438913] [2023-12-25 05:41:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:49,822 INFO L87 Difference]: Start difference. First operand 267 states and 412 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:49,959 INFO L93 Difference]: Finished difference Result 511 states and 790 transitions. [2023-12-25 05:41:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2023-12-25 05:41:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:49,962 INFO L225 Difference]: With dead ends: 511 [2023-12-25 05:41:49,962 INFO L226 Difference]: Without dead ends: 267 [2023-12-25 05:41:49,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 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 05:41:49,964 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 8 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:49,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1496 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-25 05:41:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-25 05:41:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 1.5784313725490196) internal successors, (322), 210 states have internal predecessors, (322), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2023-12-25 05:41:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 411 transitions. [2023-12-25 05:41:49,981 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 411 transitions. Word has length 95 [2023-12-25 05:41:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:49,981 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 411 transitions. [2023-12-25 05:41:49,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 411 transitions. [2023-12-25 05:41:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 05:41:49,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:49,983 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] [2023-12-25 05:41:49,996 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 05:41:50,191 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 05:41:50,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:50,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1770217095, now seen corresponding path program 2 times [2023-12-25 05:41:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312578790] [2023-12-25 05:41:50,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 05:41:50,193 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 05:41:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:50,194 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 05:41:50,195 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 05:41:50,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 05:41:50,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 05:41:50,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 05:41:50,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 05:41:50,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:50,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312578790] [2023-12-25 05:41:50,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312578790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:50,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:50,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 05:41:50,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913471071] [2023-12-25 05:41:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:50,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 05:41:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 05:41:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:50,484 INFO L87 Difference]: Start difference. First operand 267 states and 411 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:50,601 INFO L93 Difference]: Finished difference Result 513 states and 795 transitions. [2023-12-25 05:41:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 05:41:50,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2023-12-25 05:41:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:50,603 INFO L225 Difference]: With dead ends: 513 [2023-12-25 05:41:50,603 INFO L226 Difference]: Without dead ends: 269 [2023-12-25 05:41:50,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 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 05:41:50,605 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 6 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1498 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 05:41:50,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1498 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-25 05:41:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-25 05:41:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 205 states have (on average 1.575609756097561) internal successors, (323), 212 states have internal predecessors, (323), 42 states have call successors, (42), 17 states have call predecessors, (42), 21 states have return successors, (51), 41 states have call predecessors, (51), 41 states have call successors, (51) [2023-12-25 05:41:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 416 transitions. [2023-12-25 05:41:50,614 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 416 transitions. Word has length 96 [2023-12-25 05:41:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:50,615 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 416 transitions. [2023-12-25 05:41:50,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 416 transitions. [2023-12-25 05:41:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 05:41:50,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:50,616 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:41:50,631 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 05:41:50,826 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 05:41:50,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:50,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash -638773028, now seen corresponding path program 1 times [2023-12-25 05:41:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:50,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134242018] [2023-12-25 05:41:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:50,828 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 05:41:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:50,829 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 05:41:50,830 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 05:41:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:51,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:51,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:51,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:51,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134242018] [2023-12-25 05:41:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134242018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975867206] [2023-12-25 05:41:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:51,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:51,075 INFO L87 Difference]: Start difference. First operand 269 states and 416 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:51,121 INFO L93 Difference]: Finished difference Result 564 states and 885 transitions. [2023-12-25 05:41:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:51,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2023-12-25 05:41:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:51,123 INFO L225 Difference]: With dead ends: 564 [2023-12-25 05:41:51,123 INFO L226 Difference]: Without dead ends: 321 [2023-12-25 05:41:51,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 05:41:51,125 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 102 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:51,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 744 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-25 05:41:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 316. [2023-12-25 05:41:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 241 states have (on average 1.5892116182572613) internal successors, (383), 248 states have internal predecessors, (383), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2023-12-25 05:41:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 500 transitions. [2023-12-25 05:41:51,138 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 500 transitions. Word has length 97 [2023-12-25 05:41:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:51,138 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 500 transitions. [2023-12-25 05:41:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 500 transitions. [2023-12-25 05:41:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 05:41:51,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:51,140 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:41:51,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 05:41:51,348 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 05:41:51,348 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:51,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash -794817391, now seen corresponding path program 1 times [2023-12-25 05:41:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:51,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605638975] [2023-12-25 05:41:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:51,350 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 05:41:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:51,351 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 05:41:51,353 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 05:41:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:51,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 05:41:51,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-25 05:41:51,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:51,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605638975] [2023-12-25 05:41:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605638975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:51,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:51,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 05:41:51,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657230220] [2023-12-25 05:41:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:51,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 05:41:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 05:41:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 05:41:51,640 INFO L87 Difference]: Start difference. First operand 316 states and 500 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:51,723 INFO L93 Difference]: Finished difference Result 624 states and 978 transitions. [2023-12-25 05:41:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 05:41:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2023-12-25 05:41:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:51,725 INFO L225 Difference]: With dead ends: 624 [2023-12-25 05:41:51,726 INFO L226 Difference]: Without dead ends: 332 [2023-12-25 05:41:51,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 05:41:51,727 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 361 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:51,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 800 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 05:41:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-25 05:41:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 324. [2023-12-25 05:41:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 248 states have (on average 1.5685483870967742) internal successors, (389), 254 states have internal predecessors, (389), 53 states have call successors, (53), 19 states have call predecessors, (53), 22 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2023-12-25 05:41:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 502 transitions. [2023-12-25 05:41:51,741 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 502 transitions. Word has length 98 [2023-12-25 05:41:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:51,742 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 502 transitions. [2023-12-25 05:41:51,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 05:41:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 502 transitions. [2023-12-25 05:41:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 05:41:51,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:51,744 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 05:41:51,752 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 05:41:51,951 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 05:41:51,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:51,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 32847859, now seen corresponding path program 1 times [2023-12-25 05:41:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47503799] [2023-12-25 05:41:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:51,953 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 05:41:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:51,954 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 05:41:51,955 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 05:41:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:52,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 05:41:52,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:52,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:41:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:52,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47503799] [2023-12-25 05:41:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47503799] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 05:41:52,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 05:41:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 05:41:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505009074] [2023-12-25 05:41:52,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 05:41:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 05:41:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 05:41:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 05:41:52,270 INFO L87 Difference]: Start difference. First operand 324 states and 502 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-25 05:41:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:52,561 INFO L93 Difference]: Finished difference Result 763 states and 1232 transitions. [2023-12-25 05:41:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 05:41:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2023-12-25 05:41:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:52,567 INFO L225 Difference]: With dead ends: 763 [2023-12-25 05:41:52,567 INFO L226 Difference]: Without dead ends: 649 [2023-12-25 05:41:52,568 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 05:41:52,568 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 493 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:52,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1460 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 05:41:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-25 05:41:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 634. [2023-12-25 05:41:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 494 states have (on average 1.6072874493927125) internal successors, (794), 500 states have internal predecessors, (794), 117 states have call successors, (117), 19 states have call predecessors, (117), 22 states have return successors, (134), 116 states have call predecessors, (134), 116 states have call successors, (134) [2023-12-25 05:41:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1045 transitions. [2023-12-25 05:41:52,607 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1045 transitions. Word has length 99 [2023-12-25 05:41:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:52,607 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 1045 transitions. [2023-12-25 05:41:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-25 05:41:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1045 transitions. [2023-12-25 05:41:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-25 05:41:52,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:52,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:52,628 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 05:41:52,820 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 05:41:52,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1009479507, now seen corresponding path program 1 times [2023-12-25 05:41:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040200687] [2023-12-25 05:41:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:52,821 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 05:41:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:52,823 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 05:41:52,829 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 (13)] Waiting until timeout for monitored process [2023-12-25 05:41:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:53,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:53,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:53,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:53,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040200687] [2023-12-25 05:41:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040200687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:53,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471436919] [2023-12-25 05:41:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:53,060 INFO L87 Difference]: Start difference. First operand 634 states and 1045 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:53,154 INFO L93 Difference]: Finished difference Result 1489 states and 2503 transitions. [2023-12-25 05:41:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:53,155 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-25 05:41:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:53,161 INFO L225 Difference]: With dead ends: 1489 [2023-12-25 05:41:53,161 INFO L226 Difference]: Without dead ends: 931 [2023-12-25 05:41:53,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 05:41:53,167 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 96 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:53,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 776 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-25 05:41:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 926. [2023-12-25 05:41:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 722 states have (on average 1.6218836565096952) internal successors, (1171), 728 states have internal predecessors, (1171), 181 states have call successors, (181), 19 states have call predecessors, (181), 22 states have return successors, (208), 180 states have call predecessors, (208), 180 states have call successors, (208) [2023-12-25 05:41:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1560 transitions. [2023-12-25 05:41:53,219 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1560 transitions. Word has length 102 [2023-12-25 05:41:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:53,219 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1560 transitions. [2023-12-25 05:41:53,220 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1560 transitions. [2023-12-25 05:41:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-25 05:41:53,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:53,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:53,236 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 05:41:53,433 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 05:41:53,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1643890677, now seen corresponding path program 1 times [2023-12-25 05:41:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916519963] [2023-12-25 05:41:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:53,434 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 05:41:53,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:53,435 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 05:41:53,436 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 05:41:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:53,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:53,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:53,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:53,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:53,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916519963] [2023-12-25 05:41:53,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916519963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:53,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:53,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:53,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461450728] [2023-12-25 05:41:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:53,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:53,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:53,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:53,670 INFO L87 Difference]: Start difference. First operand 926 states and 1560 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:53,773 INFO L93 Difference]: Finished difference Result 2201 states and 3729 transitions. [2023-12-25 05:41:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:53,774 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2023-12-25 05:41:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:53,782 INFO L225 Difference]: With dead ends: 2201 [2023-12-25 05:41:53,782 INFO L226 Difference]: Without dead ends: 1401 [2023-12-25 05:41:53,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 05:41:53,787 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 94 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:53,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 763 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-25 05:41:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1396. [2023-12-25 05:41:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1097 states have (on average 1.6226071103008204) internal successors, (1780), 1103 states have internal predecessors, (1780), 276 states have call successors, (276), 19 states have call predecessors, (276), 22 states have return successors, (303), 275 states have call predecessors, (303), 275 states have call successors, (303) [2023-12-25 05:41:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2359 transitions. [2023-12-25 05:41:53,908 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2359 transitions. Word has length 103 [2023-12-25 05:41:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:53,908 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 2359 transitions. [2023-12-25 05:41:53,908 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2359 transitions. [2023-12-25 05:41:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-25 05:41:53,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:53,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:53,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 05:41:54,124 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 05:41:54,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:54,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 486878879, now seen corresponding path program 1 times [2023-12-25 05:41:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753941170] [2023-12-25 05:41:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:54,126 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 05:41:54,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:54,128 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 05:41:54,129 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 05:41:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:54,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:54,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:54,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:54,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753941170] [2023-12-25 05:41:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753941170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030958967] [2023-12-25 05:41:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:54,349 INFO L87 Difference]: Start difference. First operand 1396 states and 2359 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:54,507 INFO L93 Difference]: Finished difference Result 3252 states and 5540 transitions. [2023-12-25 05:41:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:54,508 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2023-12-25 05:41:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:54,525 INFO L225 Difference]: With dead ends: 3252 [2023-12-25 05:41:54,526 INFO L226 Difference]: Without dead ends: 2108 [2023-12-25 05:41:54,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 05:41:54,531 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 92 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:54,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 760 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2023-12-25 05:41:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2103. [2023-12-25 05:41:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 1681 states have (on average 1.6240333135038667) internal successors, (2730), 1687 states have internal predecessors, (2730), 399 states have call successors, (399), 19 states have call predecessors, (399), 22 states have return successors, (442), 398 states have call predecessors, (442), 398 states have call successors, (442) [2023-12-25 05:41:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3571 transitions. [2023-12-25 05:41:54,647 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3571 transitions. Word has length 104 [2023-12-25 05:41:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:54,648 INFO L495 AbstractCegarLoop]: Abstraction has 2103 states and 3571 transitions. [2023-12-25 05:41:54,648 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3571 transitions. [2023-12-25 05:41:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-25 05:41:54,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:54,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:54,667 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 05:41:54,864 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 05:41:54,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:54,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 896014708, now seen corresponding path program 1 times [2023-12-25 05:41:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288277543] [2023-12-25 05:41:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:54,866 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 05:41:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:54,867 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 05:41:54,868 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 05:41:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:55,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:55,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:55,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:55,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288277543] [2023-12-25 05:41:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288277543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:55,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:55,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128871849] [2023-12-25 05:41:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:55,080 INFO L87 Difference]: Start difference. First operand 2103 states and 3571 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:55,301 INFO L93 Difference]: Finished difference Result 4876 states and 8342 transitions. [2023-12-25 05:41:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:55,302 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2023-12-25 05:41:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:55,320 INFO L225 Difference]: With dead ends: 4876 [2023-12-25 05:41:55,320 INFO L226 Difference]: Without dead ends: 3231 [2023-12-25 05:41:55,330 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 05:41:55,331 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 90 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:55,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 760 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-12-25 05:41:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3226. [2023-12-25 05:41:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2625 states have (on average 1.6247619047619049) internal successors, (4265), 2631 states have internal predecessors, (4265), 578 states have call successors, (578), 19 states have call predecessors, (578), 22 states have return successors, (647), 577 states have call predecessors, (647), 577 states have call successors, (647) [2023-12-25 05:41:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5490 transitions. [2023-12-25 05:41:55,542 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5490 transitions. Word has length 105 [2023-12-25 05:41:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:55,543 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 5490 transitions. [2023-12-25 05:41:55,543 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5490 transitions. [2023-12-25 05:41:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-25 05:41:55,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:55,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:55,564 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 05:41:55,764 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 05:41:55,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:55,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1491279267, now seen corresponding path program 1 times [2023-12-25 05:41:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:55,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32148628] [2023-12-25 05:41:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:55,765 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 05:41:55,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:55,766 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 05:41:55,767 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 05:41:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:55,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:55,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:55,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:55,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32148628] [2023-12-25 05:41:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32148628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369116528] [2023-12-25 05:41:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:55,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:55,981 INFO L87 Difference]: Start difference. First operand 3226 states and 5490 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:56,227 INFO L93 Difference]: Finished difference Result 7800 states and 13347 transitions. [2023-12-25 05:41:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:56,228 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-12-25 05:41:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:56,258 INFO L225 Difference]: With dead ends: 7800 [2023-12-25 05:41:56,258 INFO L226 Difference]: Without dead ends: 5267 [2023-12-25 05:41:56,273 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 05:41:56,273 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 88 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:56,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 775 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2023-12-25 05:41:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 5262. [2023-12-25 05:41:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 4285 states have (on average 1.6154025670945158) internal successors, (6922), 4291 states have internal predecessors, (6922), 954 states have call successors, (954), 19 states have call predecessors, (954), 22 states have return successors, (1067), 953 states have call predecessors, (1067), 953 states have call successors, (1067) [2023-12-25 05:41:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 8943 transitions. [2023-12-25 05:41:56,621 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 8943 transitions. Word has length 106 [2023-12-25 05:41:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:56,622 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 8943 transitions. [2023-12-25 05:41:56,622 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 8943 transitions. [2023-12-25 05:41:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 05:41:56,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:56,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:56,646 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 05:41:56,843 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 05:41:56,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:56,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 712109680, now seen corresponding path program 1 times [2023-12-25 05:41:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595582189] [2023-12-25 05:41:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:56,845 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 05:41:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:56,847 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 05:41:56,851 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 05:41:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:57,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:57,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:57,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:57,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595582189] [2023-12-25 05:41:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595582189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471147588] [2023-12-25 05:41:57,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:57,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:57,077 INFO L87 Difference]: Start difference. First operand 5262 states and 8943 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:57,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:57,470 INFO L93 Difference]: Finished difference Result 12949 states and 22152 transitions. [2023-12-25 05:41:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:57,470 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2023-12-25 05:41:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:57,540 INFO L225 Difference]: With dead ends: 12949 [2023-12-25 05:41:57,541 INFO L226 Difference]: Without dead ends: 8761 [2023-12-25 05:41:57,563 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 05:41:57,564 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 86 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:57,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 763 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8761 states. [2023-12-25 05:41:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8761 to 8756. [2023-12-25 05:41:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 7173 states have (on average 1.6118778753659557) internal successors, (11562), 7179 states have internal predecessors, (11562), 1560 states have call successors, (1560), 19 states have call predecessors, (1560), 22 states have return successors, (1751), 1559 states have call predecessors, (1751), 1559 states have call successors, (1751) [2023-12-25 05:41:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 14873 transitions. [2023-12-25 05:41:58,165 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 14873 transitions. Word has length 107 [2023-12-25 05:41:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:41:58,166 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 14873 transitions. [2023-12-25 05:41:58,166 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 14873 transitions. [2023-12-25 05:41:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-25 05:41:58,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:41:58,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:41:58,196 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 05:41:58,391 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 05:41:58,392 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:41:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:41:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1142743585, now seen corresponding path program 1 times [2023-12-25 05:41:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:41:58,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246113648] [2023-12-25 05:41:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:41:58,393 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 05:41:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:41:58,394 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 05:41:58,396 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 05:41:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:41:58,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:41:58,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:41:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:41:58,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:41:58,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:41:58,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246113648] [2023-12-25 05:41:58,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246113648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:41:58,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:41:58,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:41:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776201443] [2023-12-25 05:41:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:41:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:41:58,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:41:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:41:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:41:58,646 INFO L87 Difference]: Start difference. First operand 8756 states and 14873 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:41:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:41:59,374 INFO L93 Difference]: Finished difference Result 22616 states and 38585 transitions. [2023-12-25 05:41:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:41:59,375 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2023-12-25 05:41:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:41:59,441 INFO L225 Difference]: With dead ends: 22616 [2023-12-25 05:41:59,441 INFO L226 Difference]: Without dead ends: 15361 [2023-12-25 05:41:59,475 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 05:41:59,476 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 84 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:41:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 778 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:41:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15361 states. [2023-12-25 05:42:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15361 to 15356. [2023-12-25 05:42:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 12570 states have (on average 1.601829753381066) internal successors, (20135), 12576 states have internal predecessors, (20135), 2763 states have call successors, (2763), 19 states have call predecessors, (2763), 22 states have return successors, (3098), 2762 states have call predecessors, (3098), 2762 states have call successors, (3098) [2023-12-25 05:42:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 25996 transitions. [2023-12-25 05:42:00,436 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 25996 transitions. Word has length 108 [2023-12-25 05:42:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 15356 states and 25996 transitions. [2023-12-25 05:42:00,436 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 25996 transitions. [2023-12-25 05:42:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-25 05:42:00,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:00,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:42:00,472 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 (19)] Forceful destruction successful, exit code 0 [2023-12-25 05:42:00,672 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 05:42:00,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:00,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash 293460047, now seen corresponding path program 1 times [2023-12-25 05:42:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397398149] [2023-12-25 05:42:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 05:42:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:00,675 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 05:42:00,690 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 05:42:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:00,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:42:00,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:42:00,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:00,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397398149] [2023-12-25 05:42:00,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397398149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:00,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:00,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:42:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745300201] [2023-12-25 05:42:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:00,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:42:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:42:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:42:00,909 INFO L87 Difference]: Start difference. First operand 15356 states and 25996 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:42:02,046 INFO L93 Difference]: Finished difference Result 40581 states and 69037 transitions. [2023-12-25 05:42:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:42:02,047 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2023-12-25 05:42:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:42:02,186 INFO L225 Difference]: With dead ends: 40581 [2023-12-25 05:42:02,187 INFO L226 Difference]: Without dead ends: 27339 [2023-12-25 05:42:02,240 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 05:42:02,241 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 82 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:42:02,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 763 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:42:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27339 states. [2023-12-25 05:42:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27339 to 27334. [2023-12-25 05:42:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27334 states, 22509 states have (on average 1.5971833488826692) internal successors, (35951), 22515 states have internal predecessors, (35951), 4802 states have call successors, (4802), 19 states have call predecessors, (4802), 22 states have return successors, (5411), 4801 states have call predecessors, (5411), 4801 states have call successors, (5411) [2023-12-25 05:42:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27334 states to 27334 states and 46164 transitions. [2023-12-25 05:42:03,942 INFO L78 Accepts]: Start accepts. Automaton has 27334 states and 46164 transitions. Word has length 109 [2023-12-25 05:42:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:03,943 INFO L495 AbstractCegarLoop]: Abstraction has 27334 states and 46164 transitions. [2023-12-25 05:42:03,943 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27334 states and 46164 transitions. [2023-12-25 05:42:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 05:42:03,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:03,968 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-25 05:42:03,979 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 (20)] Forceful destruction successful, exit code 0 [2023-12-25 05:42:04,176 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 05:42:04,177 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:04,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash 547648063, now seen corresponding path program 1 times [2023-12-25 05:42:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174821046] [2023-12-25 05:42:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:04,178 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 05:42:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:04,180 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 05:42:04,185 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 05:42:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:04,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:42:04,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:42:04,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:04,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174821046] [2023-12-25 05:42:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174821046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:04,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:42:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769765105] [2023-12-25 05:42:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:04,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:42:04,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:42:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:42:04,422 INFO L87 Difference]: Start difference. First operand 27334 states and 46164 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:42:06,299 INFO L93 Difference]: Finished difference Result 74378 states and 126114 transitions. [2023-12-25 05:42:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:42:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2023-12-25 05:42:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:42:06,526 INFO L225 Difference]: With dead ends: 74378 [2023-12-25 05:42:06,527 INFO L226 Difference]: Without dead ends: 49897 [2023-12-25 05:42:06,594 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 05:42:06,595 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 80 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:42:06,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 766 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:42:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49897 states. [2023-12-25 05:42:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49897 to 49892. [2023-12-25 05:42:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49892 states, 41352 states have (on average 1.5912410524279357) internal successors, (65801), 41358 states have internal predecessors, (65801), 8517 states have call successors, (8517), 19 states have call predecessors, (8517), 22 states have return successors, (9658), 8516 states have call predecessors, (9658), 8516 states have call successors, (9658) [2023-12-25 05:42:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49892 states to 49892 states and 83976 transitions. [2023-12-25 05:42:09,789 INFO L78 Accepts]: Start accepts. Automaton has 49892 states and 83976 transitions. Word has length 110 [2023-12-25 05:42:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:09,789 INFO L495 AbstractCegarLoop]: Abstraction has 49892 states and 83976 transitions. [2023-12-25 05:42:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 49892 states and 83976 transitions. [2023-12-25 05:42:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 05:42:09,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:09,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-25 05:42:09,830 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 05:42:10,025 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 05:42:10,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:10,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1110166511, now seen corresponding path program 1 times [2023-12-25 05:42:10,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:10,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207080842] [2023-12-25 05:42:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:10,027 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 05:42:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:10,029 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 05:42:10,062 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 05:42:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:10,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 05:42:10,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 05:42:10,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:10,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207080842] [2023-12-25 05:42:10,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207080842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:10,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 05:42:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217513693] [2023-12-25 05:42:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:10,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 05:42:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 05:42:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 05:42:10,282 INFO L87 Difference]: Start difference. First operand 49892 states and 83976 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:42:13,242 INFO L93 Difference]: Finished difference Result 92868 states and 156680 transitions. [2023-12-25 05:42:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 05:42:13,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2023-12-25 05:42:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:42:13,677 INFO L225 Difference]: With dead ends: 92868 [2023-12-25 05:42:13,677 INFO L226 Difference]: Without dead ends: 92754 [2023-12-25 05:42:13,735 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 05:42:13,735 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 78 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 05:42:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 763 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 05:42:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92754 states. [2023-12-25 05:42:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92754 to 92749. [2023-12-25 05:42:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92749 states, 77410 states have (on average 1.5837747061103216) internal successors, (122600), 77416 states have internal predecessors, (122600), 15316 states have call successors, (15316), 19 states have call predecessors, (15316), 22 states have return successors, (17503), 15315 states have call predecessors, (17503), 15315 states have call successors, (17503) [2023-12-25 05:42:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92749 states to 92749 states and 155419 transitions. [2023-12-25 05:42:18,051 INFO L78 Accepts]: Start accepts. Automaton has 92749 states and 155419 transitions. Word has length 111 [2023-12-25 05:42:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:18,052 INFO L495 AbstractCegarLoop]: Abstraction has 92749 states and 155419 transitions. [2023-12-25 05:42:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-25 05:42:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 92749 states and 155419 transitions. [2023-12-25 05:42:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-25 05:42:18,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:18,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:42:18,089 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 05:42:18,286 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 05:42:18,287 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:18,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1607342880, now seen corresponding path program 1 times [2023-12-25 05:42:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978407377] [2023-12-25 05:42:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:18,288 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 05:42:18,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:18,290 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 05:42:18,324 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 05:42:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:18,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 05:42:18,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 05:42:18,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:18,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:18,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978407377] [2023-12-25 05:42:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978407377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:18,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 05:42:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164250631] [2023-12-25 05:42:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:18,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 05:42:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 05:42:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-25 05:42:18,924 INFO L87 Difference]: Start difference. First operand 92749 states and 155419 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 05:42:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:42:26,043 INFO L93 Difference]: Finished difference Result 184777 states and 315175 transitions. [2023-12-25 05:42:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 05:42:26,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 112 [2023-12-25 05:42:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:42:27,387 INFO L225 Difference]: With dead ends: 184777 [2023-12-25 05:42:27,387 INFO L226 Difference]: Without dead ends: 184670 [2023-12-25 05:42:27,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-12-25 05:42:27,459 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1025 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:42:27,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 3296 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 05:42:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184670 states. [2023-12-25 05:42:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184670 to 184654. [2023-12-25 05:42:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184654 states, 154186 states have (on average 1.5848390904491978) internal successors, (244360), 154088 states have internal predecessors, (244360), 30417 states have call successors, (30417), 44 states have call predecessors, (30417), 50 states have return successors, (38070), 30527 states have call predecessors, (38070), 30414 states have call successors, (38070) [2023-12-25 05:42:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184654 states to 184654 states and 312847 transitions. [2023-12-25 05:42:37,491 INFO L78 Accepts]: Start accepts. Automaton has 184654 states and 312847 transitions. Word has length 112 [2023-12-25 05:42:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:37,491 INFO L495 AbstractCegarLoop]: Abstraction has 184654 states and 312847 transitions. [2023-12-25 05:42:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 05:42:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 184654 states and 312847 transitions. [2023-12-25 05:42:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-25 05:42:37,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:37,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:42:37,554 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 05:42:37,754 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 05:42:37,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:37,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash -986979462, now seen corresponding path program 1 times [2023-12-25 05:42:37,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:37,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482287127] [2023-12-25 05:42:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:37,756 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 05:42:37,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:37,757 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 05:42:37,766 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 05:42:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:37,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 05:42:37,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 05:42:38,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:38,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482287127] [2023-12-25 05:42:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482287127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 05:42:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23574672] [2023-12-25 05:42:38,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 05:42:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 05:42:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 05:42:38,373 INFO L87 Difference]: Start difference. First operand 184654 states and 312847 transitions. Second operand has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-25 05:42:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:42:44,193 INFO L93 Difference]: Finished difference Result 185164 states and 313629 transitions. [2023-12-25 05:42:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 05:42:44,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 113 [2023-12-25 05:42:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:42:45,325 INFO L225 Difference]: With dead ends: 185164 [2023-12-25 05:42:45,325 INFO L226 Difference]: Without dead ends: 184741 [2023-12-25 05:42:45,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 05:42:45,421 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 154 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 05:42:45,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 2624 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 05:42:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184741 states. [2023-12-25 05:42:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184741 to 184735. [2023-12-25 05:42:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184735 states, 154250 states have (on average 1.5848427876823339) internal successors, (244462), 154156 states have internal predecessors, (244462), 30432 states have call successors, (30432), 47 states have call predecessors, (30432), 52 states have return successors, (38089), 30540 states have call predecessors, (38089), 30429 states have call successors, (38089) [2023-12-25 05:42:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184735 states to 184735 states and 312983 transitions. [2023-12-25 05:42:54,915 INFO L78 Accepts]: Start accepts. Automaton has 184735 states and 312983 transitions. Word has length 113 [2023-12-25 05:42:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:42:54,915 INFO L495 AbstractCegarLoop]: Abstraction has 184735 states and 312983 transitions. [2023-12-25 05:42:54,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-25 05:42:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 184735 states and 312983 transitions. [2023-12-25 05:42:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-25 05:42:54,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:42:54,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:42:54,961 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 05:42:55,157 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 05:42:55,158 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:42:55,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:42:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash -68121803, now seen corresponding path program 1 times [2023-12-25 05:42:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:42:55,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813702306] [2023-12-25 05:42:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 05:42:55,159 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 05:42:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:42:55,160 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 05:42:55,173 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 05:42:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 05:42:55,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 05:42:55,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:42:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 05:42:55,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 05:42:55,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:42:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813702306] [2023-12-25 05:42:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813702306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 05:42:55,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 05:42:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 05:42:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754684215] [2023-12-25 05:42:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 05:42:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 05:42:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:42:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 05:42:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 05:42:55,498 INFO L87 Difference]: Start difference. First operand 184735 states and 312983 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)