/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:45:33,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:45:33,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 09:45:33,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:45:33,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:45:33,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:45:33,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:45:33,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:45:33,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:45:33,932 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:45:33,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:45:33,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:45:33,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:45:33,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:45:33,934 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:45:33,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:45:33,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:45:33,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:45:33,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:45:33,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:45:33,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:45:33,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:45:33,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:45:33,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:45:33,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:45:33,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:45:33,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:45:33,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:45:33,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:45:33,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:45:33,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:45:33,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:45:33,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:45:33,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:45:33,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:45:33,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:45:33,940 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:45:34,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:45:34,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:45:34,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:45:34,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:45:34,159 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:45:34,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2023-12-21 09:45:35,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:45:35,346 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:45:35,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2023-12-21 09:45:35,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69762733e/e917d801bbb549fe87842d52f3608b54/FLAGdaa22ba45 [2023-12-21 09:45:35,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69762733e/e917d801bbb549fe87842d52f3608b54 [2023-12-21 09:45:35,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:45:35,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:45:35,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:45:35,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:45:35,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:45:35,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:35,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9ea28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35, skipping insertion in model container [2023-12-21 09:45:35,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:35,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:45:35,792 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_spec27_product28.cil.c[32786,32799] [2023-12-21 09:45:35,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:45:35,880 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:45:35,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [48] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [95] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [386] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [532] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [898] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1300] [2023-12-21 09:45:35,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1622] [2023-12-21 09:45:35,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1631] [2023-12-21 09:45:35,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1648] [2023-12-21 09:45:35,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1683] [2023-12-21 09:45:35,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2752] [2023-12-21 09:45:35,927 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_spec27_product28.cil.c[32786,32799] [2023-12-21 09:45:35,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:45:35,983 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:45:35,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35 WrapperNode [2023-12-21 09:45:35,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:45:35,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:45:35,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:45:35,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:45:35,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,119 INFO L138 Inliner]: procedures = 128, calls = 197, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 856 [2023-12-21 09:45:36,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:45:36,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:45:36,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:45:36,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:45:36,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,184 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]. [2023-12-21 09:45:36,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:45:36,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:45:36,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:45:36,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:45:36,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (1/1) ... [2023-12-21 09:45:36,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:45:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:36,317 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) [2023-12-21 09:45:36,341 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 [2023-12-21 09:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-21 09:45:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-21 09:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 09:45:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 09:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 09:45:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 09:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:45:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:45:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:45:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:45:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:45:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 09:45:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 09:45:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:45:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:45:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:45:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:45:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:45:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:45:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:45:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:45:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:45:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:45:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:45:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-21 09:45:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:45:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:45:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:45:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:45:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:45:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:45:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:45:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:45:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:45:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:45:36,498 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:45:36,500 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:45:37,053 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:45:37,106 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:45:37,106 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:45:37,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:45:37 BoogieIcfgContainer [2023-12-21 09:45:37,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:45:37,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:45:37,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:45:37,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:45:37,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:45:35" (1/3) ... [2023-12-21 09:45:37,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231b445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:45:37, skipping insertion in model container [2023-12-21 09:45:37,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:35" (2/3) ... [2023-12-21 09:45:37,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231b445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:45:37, skipping insertion in model container [2023-12-21 09:45:37,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:45:37" (3/3) ... [2023-12-21 09:45:37,113 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2023-12-21 09:45:37,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:45:37,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:45:37,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:45:37,170 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;@7b87da99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:45:37,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:45:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 238 states have internal predecessors, (368), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-21 09:45:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 09:45:37,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:37,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:37,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:37,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash 182203916, now seen corresponding path program 1 times [2023-12-21 09:45:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647903122] [2023-12-21 09:45:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:45:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:45:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:45:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:45:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:45:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:45:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:45:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:45:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:45:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:45:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:45:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:45:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:45:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:45:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 09:45:37,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647903122] [2023-12-21 09:45:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647903122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:37,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81177407] [2023-12-21 09:45:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:37,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:37,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:37,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 09:45:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:45:38,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:45:38,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:45:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81177407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:38,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:45:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-21 09:45:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500662447] [2023-12-21 09:45:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:45:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:45:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 09:45:38,159 INFO L87 Difference]: Start difference. First operand has 310 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 238 states have internal predecessors, (368), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:38,235 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2023-12-21 09:45:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:45:38,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2023-12-21 09:45:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:38,253 INFO L225 Difference]: With dead ends: 479 [2023-12-21 09:45:38,253 INFO L226 Difference]: Without dead ends: 307 [2023-12-21 09:45:38,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 09:45:38,258 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:38,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:45:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-21 09:45:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-21 09:45:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 232 states have (on average 1.5560344827586208) internal successors, (361), 235 states have internal predecessors, (361), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 09:45:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 462 transitions. [2023-12-21 09:45:38,308 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 462 transitions. Word has length 133 [2023-12-21 09:45:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:38,309 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 462 transitions. [2023-12-21 09:45:38,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 462 transitions. [2023-12-21 09:45:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 09:45:38,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:38,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:38,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 09:45:38,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 09:45:38,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:38,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash 44385971, now seen corresponding path program 1 times [2023-12-21 09:45:38,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:38,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464114092] [2023-12-21 09:45:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:38,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:45:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:45:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:45:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:45:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:45:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:45:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:45:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:45:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:45:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:45:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:45:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:45:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:45:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:45:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 09:45:38,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:38,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464114092] [2023-12-21 09:45:38,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464114092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:38,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440562916] [2023-12-21 09:45:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:38,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:38,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:38,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:38,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 09:45:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:45:39,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:45:39,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:45:39,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440562916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:39,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:45:39,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 09:45:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154317470] [2023-12-21 09:45:39,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:39,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:45:39,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:39,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:45:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:45:39,079 INFO L87 Difference]: Start difference. First operand 307 states and 462 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:39,134 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-12-21 09:45:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:45:39,134 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 134 [2023-12-21 09:45:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:39,139 INFO L225 Difference]: With dead ends: 475 [2023-12-21 09:45:39,139 INFO L226 Difference]: Without dead ends: 309 [2023-12-21 09:45:39,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:45:39,143 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:39,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:45:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-21 09:45:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-21 09:45:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 234 states have (on average 1.5512820512820513) internal successors, (363), 237 states have internal predecessors, (363), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 09:45:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 464 transitions. [2023-12-21 09:45:39,165 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 464 transitions. Word has length 134 [2023-12-21 09:45:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:39,166 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 464 transitions. [2023-12-21 09:45:39,166 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 464 transitions. [2023-12-21 09:45:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 09:45:39,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:39,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:39,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 09:45:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:45:39,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:39,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1383789359, now seen corresponding path program 1 times [2023-12-21 09:45:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:39,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019019260] [2023-12-21 09:45:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:45:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:45:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:45:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:45:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:45:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:45:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:45:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:45:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:45:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:45:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:45:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:45:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:45:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:45:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:45:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019019260] [2023-12-21 09:45:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019019260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840383997] [2023-12-21 09:45:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:39,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:39,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 09:45:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:39,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:45:39,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:45:39,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:45:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840383997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:39,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:45:39,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 09:45:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858035023] [2023-12-21 09:45:39,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:45:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:45:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:45:39,829 INFO L87 Difference]: Start difference. First operand 309 states and 464 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:39,878 INFO L93 Difference]: Finished difference Result 644 states and 980 transitions. [2023-12-21 09:45:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:45:39,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-21 09:45:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:39,881 INFO L225 Difference]: With dead ends: 644 [2023-12-21 09:45:39,881 INFO L226 Difference]: Without dead ends: 357 [2023-12-21 09:45:39,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:45:39,884 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 95 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:39,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 869 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:45:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-21 09:45:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 352. [2023-12-21 09:45:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 266 states have (on average 1.5639097744360901) internal successors, (416), 269 states have internal predecessors, (416), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-21 09:45:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 539 transitions. [2023-12-21 09:45:39,914 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 539 transitions. Word has length 139 [2023-12-21 09:45:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:39,914 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 539 transitions. [2023-12-21 09:45:39,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 539 transitions. [2023-12-21 09:45:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 09:45:39,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:39,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:39,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 09:45:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:40,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:40,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1593849234, now seen corresponding path program 1 times [2023-12-21 09:45:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969986642] [2023-12-21 09:45:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:45:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:45:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:45:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 09:45:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:45:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:45:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:45:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:45:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:45:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:45:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:45:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:45:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:45:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:45:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:45:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969986642] [2023-12-21 09:45:40,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969986642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093268461] [2023-12-21 09:45:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:40,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:40,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:40,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:40,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 09:45:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:45:40,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:45:40,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:45:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093268461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:40,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:45:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-21 09:45:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303122066] [2023-12-21 09:45:40,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:40,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:45:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:45:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:45:40,572 INFO L87 Difference]: Start difference. First operand 352 states and 539 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:40,633 INFO L93 Difference]: Finished difference Result 699 states and 1072 transitions. [2023-12-21 09:45:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:45:40,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-21 09:45:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:40,635 INFO L225 Difference]: With dead ends: 699 [2023-12-21 09:45:40,635 INFO L226 Difference]: Without dead ends: 354 [2023-12-21 09:45:40,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:45:40,636 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 8 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:40,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1765 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:45:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-21 09:45:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-12-21 09:45:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 267 states have (on average 1.5617977528089888) internal successors, (417), 271 states have internal predecessors, (417), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2023-12-21 09:45:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 542 transitions. [2023-12-21 09:45:40,647 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 542 transitions. Word has length 140 [2023-12-21 09:45:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:40,647 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 542 transitions. [2023-12-21 09:45:40,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 542 transitions. [2023-12-21 09:45:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 09:45:40,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:40,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:40,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 09:45:40,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:40,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:40,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:40,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1600340539, now seen corresponding path program 1 times [2023-12-21 09:45:40,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:40,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852364985] [2023-12-21 09:45:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:45:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:45:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:45:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:45:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:45:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:45:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:45:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:45:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:45:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:45:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:45:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:45:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 09:45:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:45:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852364985] [2023-12-21 09:45:41,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852364985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:41,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839552833] [2023-12-21 09:45:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:41,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:41,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:41,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 09:45:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:45:41,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:45:41,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:45:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839552833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:45:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-21 09:45:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528125748] [2023-12-21 09:45:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:41,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:45:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:45:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:45:41,439 INFO L87 Difference]: Start difference. First operand 354 states and 542 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:41,508 INFO L93 Difference]: Finished difference Result 701 states and 1077 transitions. [2023-12-21 09:45:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:45:41,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2023-12-21 09:45:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:41,510 INFO L225 Difference]: With dead ends: 701 [2023-12-21 09:45:41,510 INFO L226 Difference]: Without dead ends: 356 [2023-12-21 09:45:41,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:45:41,511 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 8 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:41,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1751 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:45:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-21 09:45:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2023-12-21 09:45:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 273 states have internal predecessors, (418), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2023-12-21 09:45:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 548 transitions. [2023-12-21 09:45:41,523 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 548 transitions. Word has length 141 [2023-12-21 09:45:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:41,523 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 548 transitions. [2023-12-21 09:45:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 548 transitions. [2023-12-21 09:45:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 09:45:41,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:41,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:41,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 09:45:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:41,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:41,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash -714528200, now seen corresponding path program 1 times [2023-12-21 09:45:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39493896] [2023-12-21 09:45:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:45:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:45:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:45:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:45:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:45:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:45:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:45:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:45:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:45:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:45:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:45:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:45:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:45:41,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39493896] [2023-12-21 09:45:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39493896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:41,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 09:45:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016067341] [2023-12-21 09:45:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:41,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 09:45:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 09:45:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 09:45:41,879 INFO L87 Difference]: Start difference. First operand 356 states and 548 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:43,128 INFO L93 Difference]: Finished difference Result 757 states and 1173 transitions. [2023-12-21 09:45:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:45:43,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2023-12-21 09:45:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:43,131 INFO L225 Difference]: With dead ends: 757 [2023-12-21 09:45:43,131 INFO L226 Difference]: Without dead ends: 420 [2023-12-21 09:45:43,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:45:43,132 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 794 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:43,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 812 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:45:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-21 09:45:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 356. [2023-12-21 09:45:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 273 states have internal predecessors, (418), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2023-12-21 09:45:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 547 transitions. [2023-12-21 09:45:43,150 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 547 transitions. Word has length 142 [2023-12-21 09:45:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:43,150 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 547 transitions. [2023-12-21 09:45:43,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 547 transitions. [2023-12-21 09:45:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 09:45:43,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:43,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:45:43,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:43,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1759814339, now seen corresponding path program 2 times [2023-12-21 09:45:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213936374] [2023-12-21 09:45:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:45:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:45:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:45:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:45:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:45:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:45:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:45:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:45:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:45:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:45:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:45:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:45:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:45:43,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213936374] [2023-12-21 09:45:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213936374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:43,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 09:45:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770492336] [2023-12-21 09:45:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:43,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 09:45:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 09:45:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 09:45:43,281 INFO L87 Difference]: Start difference. First operand 356 states and 547 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:44,406 INFO L93 Difference]: Finished difference Result 759 states and 1176 transitions. [2023-12-21 09:45:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:45:44,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2023-12-21 09:45:44,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:44,409 INFO L225 Difference]: With dead ends: 759 [2023-12-21 09:45:44,409 INFO L226 Difference]: Without dead ends: 422 [2023-12-21 09:45:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:45:44,410 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:44,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 812 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:45:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-21 09:45:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-21 09:45:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2023-12-21 09:45:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 550 transitions. [2023-12-21 09:45:44,427 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 550 transitions. Word has length 143 [2023-12-21 09:45:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:44,428 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 550 transitions. [2023-12-21 09:45:44,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 550 transitions. [2023-12-21 09:45:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 09:45:44,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:44,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:44,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:45:44,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:44,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1490198351, now seen corresponding path program 1 times [2023-12-21 09:45:44,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508856769] [2023-12-21 09:45:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:45:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:45:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:45:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:45:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:45:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:45:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:45:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:45:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:45:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:45:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:45:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:45:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508856769] [2023-12-21 09:45:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508856769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 09:45:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760951822] [2023-12-21 09:45:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:44,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 09:45:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 09:45:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 09:45:44,560 INFO L87 Difference]: Start difference. First operand 358 states and 550 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:45,666 INFO L93 Difference]: Finished difference Result 759 states and 1175 transitions. [2023-12-21 09:45:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 09:45:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2023-12-21 09:45:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:45,668 INFO L225 Difference]: With dead ends: 759 [2023-12-21 09:45:45,668 INFO L226 Difference]: Without dead ends: 422 [2023-12-21 09:45:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:45:45,670 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 810 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:45,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 812 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:45:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-21 09:45:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-21 09:45:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2023-12-21 09:45:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 550 transitions. [2023-12-21 09:45:45,685 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 550 transitions. Word has length 144 [2023-12-21 09:45:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:45,685 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 550 transitions. [2023-12-21 09:45:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:45:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 550 transitions. [2023-12-21 09:45:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 09:45:45,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:45,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:45,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:45:45,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:45,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1961554701, now seen corresponding path program 1 times [2023-12-21 09:45:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:45,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474410399] [2023-12-21 09:45:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:45:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:45:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:45:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:45:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:45:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:45:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:45:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:45:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:45:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:45:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:45:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:45:45,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:45,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474410399] [2023-12-21 09:45:45,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474410399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 09:45:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222156578] [2023-12-21 09:45:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:45:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:45:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:45:45,883 INFO L87 Difference]: Start difference. First operand 358 states and 550 transitions. Second operand has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:45:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:47,424 INFO L93 Difference]: Finished difference Result 757 states and 1170 transitions. [2023-12-21 09:45:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 09:45:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2023-12-21 09:45:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:47,426 INFO L225 Difference]: With dead ends: 757 [2023-12-21 09:45:47,426 INFO L226 Difference]: Without dead ends: 422 [2023-12-21 09:45:47,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 09:45:47,428 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 811 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:47,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1163 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:45:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-21 09:45:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-21 09:45:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2023-12-21 09:45:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2023-12-21 09:45:47,442 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 144 [2023-12-21 09:45:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:47,442 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2023-12-21 09:45:47,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:45:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2023-12-21 09:45:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 09:45:47,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:47,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:45:47,444 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:47,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1055950414, now seen corresponding path program 2 times [2023-12-21 09:45:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014982238] [2023-12-21 09:45:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:45:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:45:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:45:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:45:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:45:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:45:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:45:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:45:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:45:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:45:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:45:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:45:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014982238] [2023-12-21 09:45:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014982238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:47,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 09:45:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503029693] [2023-12-21 09:45:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:47,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:45:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:45:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:45:47,594 INFO L87 Difference]: Start difference. First operand 358 states and 549 transitions. Second operand has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:45:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:49,096 INFO L93 Difference]: Finished difference Result 759 states and 1176 transitions. [2023-12-21 09:45:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 09:45:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 145 [2023-12-21 09:45:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:49,098 INFO L225 Difference]: With dead ends: 759 [2023-12-21 09:45:49,098 INFO L226 Difference]: Without dead ends: 424 [2023-12-21 09:45:49,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 09:45:49,099 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 809 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:49,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1163 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:45:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-21 09:45:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 360. [2023-12-21 09:45:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 270 states have (on average 1.5555555555555556) internal successors, (420), 277 states have internal predecessors, (420), 62 states have call successors, (62), 23 states have call predecessors, (62), 27 states have return successors, (73), 61 states have call predecessors, (73), 61 states have call successors, (73) [2023-12-21 09:45:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 555 transitions. [2023-12-21 09:45:49,116 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 555 transitions. Word has length 145 [2023-12-21 09:45:49,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:49,116 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 555 transitions. [2023-12-21 09:45:49,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:45:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 555 transitions. [2023-12-21 09:45:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 09:45:49,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:49,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 09:45:49,118 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:49,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1837258350, now seen corresponding path program 1 times [2023-12-21 09:45:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360996875] [2023-12-21 09:45:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:49,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:45:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:45:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:45:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:45:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:45:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:45:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:45:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:45:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:45:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:45:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:45:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:49,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360996875] [2023-12-21 09:45:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360996875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:45:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135632138] [2023-12-21 09:45:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:45:49,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:45:49,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 09:45:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:49,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:45:49,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:45:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:49,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:45:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135632138] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:45:49,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:45:49,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-21 09:45:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766220719] [2023-12-21 09:45:49,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:45:49,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 09:45:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 09:45:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:49,574 INFO L87 Difference]: Start difference. First operand 360 states and 555 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-21 09:45:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:50,548 INFO L93 Difference]: Finished difference Result 900 states and 1461 transitions. [2023-12-21 09:45:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 09:45:50,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 146 [2023-12-21 09:45:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:50,552 INFO L225 Difference]: With dead ends: 900 [2023-12-21 09:45:50,552 INFO L226 Difference]: Without dead ends: 734 [2023-12-21 09:45:50,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:45:50,553 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1206 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:50,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1010 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:45:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-21 09:45:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 655. [2023-12-21 09:45:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 501 states have (on average 1.6167664670658684) internal successors, (810), 508 states have internal predecessors, (810), 126 states have call successors, (126), 23 states have call predecessors, (126), 27 states have return successors, (147), 125 states have call predecessors, (147), 125 states have call successors, (147) [2023-12-21 09:45:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1083 transitions. [2023-12-21 09:45:50,575 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1083 transitions. Word has length 146 [2023-12-21 09:45:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:50,575 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1083 transitions. [2023-12-21 09:45:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-21 09:45:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1083 transitions. [2023-12-21 09:45:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 09:45:50,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:50,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:50,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 09:45:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:45:50,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:50,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash -217694479, now seen corresponding path program 1 times [2023-12-21 09:45:50,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:50,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804536760] [2023-12-21 09:45:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:45:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:45:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:45:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:45:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:45:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:45:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:45:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:45:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:45:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:45:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:45:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804536760] [2023-12-21 09:45:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804536760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:50,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:50,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58075787] [2023-12-21 09:45:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:50,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:50,864 INFO L87 Difference]: Start difference. First operand 655 states and 1083 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:51,870 INFO L93 Difference]: Finished difference Result 1611 states and 2730 transitions. [2023-12-21 09:45:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2023-12-21 09:45:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:51,875 INFO L225 Difference]: With dead ends: 1611 [2023-12-21 09:45:51,875 INFO L226 Difference]: Without dead ends: 1016 [2023-12-21 09:45:51,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:51,877 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 893 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:51,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 594 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:45:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-21 09:45:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 947. [2023-12-21 09:45:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 729 states have (on average 1.6282578875171467) internal successors, (1187), 736 states have internal predecessors, (1187), 190 states have call successors, (190), 23 states have call predecessors, (190), 27 states have return successors, (221), 189 states have call predecessors, (221), 189 states have call successors, (221) [2023-12-21 09:45:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1598 transitions. [2023-12-21 09:45:51,917 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1598 transitions. Word has length 152 [2023-12-21 09:45:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:51,918 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1598 transitions. [2023-12-21 09:45:51,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1598 transitions. [2023-12-21 09:45:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 09:45:51,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:51,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:45:51,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:51,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1469445229, now seen corresponding path program 1 times [2023-12-21 09:45:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743236118] [2023-12-21 09:45:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:45:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:45:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:45:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:45:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:45:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:45:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:45:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:45:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:45:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 09:45:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 09:45:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743236118] [2023-12-21 09:45:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743236118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655662395] [2023-12-21 09:45:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:52,009 INFO L87 Difference]: Start difference. First operand 947 states and 1598 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:52,930 INFO L93 Difference]: Finished difference Result 2308 states and 3957 transitions. [2023-12-21 09:45:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2023-12-21 09:45:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:52,936 INFO L225 Difference]: With dead ends: 2308 [2023-12-21 09:45:52,936 INFO L226 Difference]: Without dead ends: 1471 [2023-12-21 09:45:52,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:52,939 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 901 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:52,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 574 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:45:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2023-12-21 09:45:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1402. [2023-12-21 09:45:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1089 states have (on average 1.63544536271809) internal successors, (1781), 1096 states have internal predecessors, (1781), 285 states have call successors, (285), 23 states have call predecessors, (285), 27 states have return successors, (316), 284 states have call predecessors, (316), 284 states have call successors, (316) [2023-12-21 09:45:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2382 transitions. [2023-12-21 09:45:52,979 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2382 transitions. Word has length 153 [2023-12-21 09:45:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:52,979 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 2382 transitions. [2023-12-21 09:45:52,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2382 transitions. [2023-12-21 09:45:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 09:45:52,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:52,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:45:52,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 324922255, now seen corresponding path program 1 times [2023-12-21 09:45:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195563183] [2023-12-21 09:45:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:45:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:45:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:45:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:45:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:45:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:45:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:45:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:45:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 09:45:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:45:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:45:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:53,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:53,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195563183] [2023-12-21 09:45:53,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195563183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:53,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:53,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:53,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198683941] [2023-12-21 09:45:53,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:53,115 INFO L87 Difference]: Start difference. First operand 1402 states and 2382 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:53,932 INFO L93 Difference]: Finished difference Result 3326 states and 5769 transitions. [2023-12-21 09:45:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2023-12-21 09:45:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:53,942 INFO L225 Difference]: With dead ends: 3326 [2023-12-21 09:45:53,942 INFO L226 Difference]: Without dead ends: 2154 [2023-12-21 09:45:53,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:53,946 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 901 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:53,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 568 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:45:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2023-12-21 09:45:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2085. [2023-12-21 09:45:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1649 states have (on average 1.6416009702850212) internal successors, (2707), 1656 states have internal predecessors, (2707), 408 states have call successors, (408), 23 states have call predecessors, (408), 27 states have return successors, (455), 407 states have call predecessors, (455), 407 states have call successors, (455) [2023-12-21 09:45:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3570 transitions. [2023-12-21 09:45:54,012 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3570 transitions. Word has length 154 [2023-12-21 09:45:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:54,013 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3570 transitions. [2023-12-21 09:45:54,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3570 transitions. [2023-12-21 09:45:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 09:45:54,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:54,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:45:54,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:54,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1292556690, now seen corresponding path program 1 times [2023-12-21 09:45:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463424634] [2023-12-21 09:45:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:45:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:45:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:45:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:45:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:45:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:45:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:45:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:45:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:45:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:45:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 09:45:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:54,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463424634] [2023-12-21 09:45:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463424634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:54,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761540176] [2023-12-21 09:45:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:54,106 INFO L87 Difference]: Start difference. First operand 2085 states and 3570 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:54,923 INFO L93 Difference]: Finished difference Result 4896 states and 8574 transitions. [2023-12-21 09:45:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:54,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2023-12-21 09:45:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:54,963 INFO L225 Difference]: With dead ends: 4896 [2023-12-21 09:45:54,963 INFO L226 Difference]: Without dead ends: 3238 [2023-12-21 09:45:54,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:54,984 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 867 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:54,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 569 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:45:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2023-12-21 09:45:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3169. [2023-12-21 09:45:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 2554 states have (on average 1.6456538762725137) internal successors, (4203), 2561 states have internal predecessors, (4203), 587 states have call successors, (587), 23 states have call predecessors, (587), 27 states have return successors, (660), 586 states have call predecessors, (660), 586 states have call successors, (660) [2023-12-21 09:45:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5450 transitions. [2023-12-21 09:45:55,100 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5450 transitions. Word has length 155 [2023-12-21 09:45:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:55,100 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5450 transitions. [2023-12-21 09:45:55,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5450 transitions. [2023-12-21 09:45:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 09:45:55,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:55,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:55,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:45:55,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1745280851, now seen corresponding path program 1 times [2023-12-21 09:45:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768422575] [2023-12-21 09:45:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:55,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:45:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:45:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:45:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:45:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:45:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:45:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:45:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:45:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:45:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:45:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:45:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768422575] [2023-12-21 09:45:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768422575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:55,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:55,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947411583] [2023-12-21 09:45:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:55,185 INFO L87 Difference]: Start difference. First operand 3169 states and 5450 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:56,110 INFO L93 Difference]: Finished difference Result 7727 states and 13586 transitions. [2023-12-21 09:45:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:56,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2023-12-21 09:45:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:56,149 INFO L225 Difference]: With dead ends: 7727 [2023-12-21 09:45:56,149 INFO L226 Difference]: Without dead ends: 5208 [2023-12-21 09:45:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:56,156 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 897 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:56,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 612 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:45:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2023-12-21 09:45:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5139. [2023-12-21 09:45:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 4148 states have (on average 1.6378977820636451) internal successors, (6794), 4155 states have internal predecessors, (6794), 963 states have call successors, (963), 23 states have call predecessors, (963), 27 states have return successors, (1080), 962 states have call predecessors, (1080), 962 states have call successors, (1080) [2023-12-21 09:45:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 8837 transitions. [2023-12-21 09:45:56,326 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 8837 transitions. Word has length 156 [2023-12-21 09:45:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:56,326 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 8837 transitions. [2023-12-21 09:45:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 8837 transitions. [2023-12-21 09:45:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 09:45:56,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:56,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:45:56,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:56,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -413507122, now seen corresponding path program 1 times [2023-12-21 09:45:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652502487] [2023-12-21 09:45:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:56,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:45:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:45:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:45:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:45:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:45:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:45:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:45:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:45:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:45:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:45:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 09:45:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652502487] [2023-12-21 09:45:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652502487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951129231] [2023-12-21 09:45:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:56,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:56,449 INFO L87 Difference]: Start difference. First operand 5139 states and 8837 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:57,467 INFO L93 Difference]: Finished difference Result 12708 states and 22334 transitions. [2023-12-21 09:45:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2023-12-21 09:45:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:57,500 INFO L225 Difference]: With dead ends: 12708 [2023-12-21 09:45:57,500 INFO L226 Difference]: Without dead ends: 8585 [2023-12-21 09:45:57,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:57,512 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 857 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:57,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 571 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:45:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2023-12-21 09:45:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8516. [2023-12-21 09:45:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 6919 states have (on average 1.635640988582165) internal successors, (11317), 6926 states have internal predecessors, (11317), 1569 states have call successors, (1569), 23 states have call predecessors, (1569), 27 states have return successors, (1764), 1568 states have call predecessors, (1764), 1568 states have call successors, (1764) [2023-12-21 09:45:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 14650 transitions. [2023-12-21 09:45:57,827 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 14650 transitions. Word has length 157 [2023-12-21 09:45:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:57,827 INFO L495 AbstractCegarLoop]: Abstraction has 8516 states and 14650 transitions. [2023-12-21 09:45:57,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 14650 transitions. [2023-12-21 09:45:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 09:45:57,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:57,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:45:57,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:57,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash -897833455, now seen corresponding path program 1 times [2023-12-21 09:45:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201115742] [2023-12-21 09:45:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:45:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:45:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:45:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:45:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:45:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:45:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:45:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:45:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:45:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:45:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:45:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201115742] [2023-12-21 09:45:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201115742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:57,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:57,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438314491] [2023-12-21 09:45:57,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:57,951 INFO L87 Difference]: Start difference. First operand 8516 states and 14650 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:45:59,010 INFO L93 Difference]: Finished difference Result 22060 states and 38733 transitions. [2023-12-21 09:45:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:45:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2023-12-21 09:45:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:45:59,061 INFO L225 Difference]: With dead ends: 22060 [2023-12-21 09:45:59,061 INFO L226 Difference]: Without dead ends: 14969 [2023-12-21 09:45:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:45:59,083 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 875 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:45:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 584 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:45:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2023-12-21 09:45:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 14900. [2023-12-21 09:45:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14900 states, 12100 states have (on average 1.6259504132231406) internal successors, (19674), 12107 states have internal predecessors, (19674), 2772 states have call successors, (2772), 23 states have call predecessors, (2772), 27 states have return successors, (3111), 2771 states have call predecessors, (3111), 2771 states have call successors, (3111) [2023-12-21 09:45:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14900 states to 14900 states and 25557 transitions. [2023-12-21 09:45:59,562 INFO L78 Accepts]: Start accepts. Automaton has 14900 states and 25557 transitions. Word has length 158 [2023-12-21 09:45:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:45:59,562 INFO L495 AbstractCegarLoop]: Abstraction has 14900 states and 25557 transitions. [2023-12-21 09:45:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:45:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 14900 states and 25557 transitions. [2023-12-21 09:45:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 09:45:59,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:45:59,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:45:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:45:59,602 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:45:59,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:45:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1154953171, now seen corresponding path program 1 times [2023-12-21 09:45:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:45:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811276885] [2023-12-21 09:45:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:45:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:45:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:45:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:45:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:45:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:45:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:45:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:45:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:45:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:45:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:45:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:45:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:45:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:45:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:45:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:45:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:45:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:45:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 09:45:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 09:45:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:45:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:45:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:45:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811276885] [2023-12-21 09:45:59,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811276885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:45:59,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:45:59,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:45:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548206140] [2023-12-21 09:45:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:45:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:45:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:45:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:45:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:45:59,673 INFO L87 Difference]: Start difference. First operand 14900 states and 25557 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:00,993 INFO L93 Difference]: Finished difference Result 39419 states and 69119 transitions. [2023-12-21 09:46:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:46:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2023-12-21 09:46:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:01,080 INFO L225 Difference]: With dead ends: 39419 [2023-12-21 09:46:01,080 INFO L226 Difference]: Without dead ends: 26536 [2023-12-21 09:46:01,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:01,117 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 865 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:01,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 569 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:46:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26536 states. [2023-12-21 09:46:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26536 to 26467. [2023-12-21 09:46:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26467 states, 21628 states have (on average 1.6219252820417978) internal successors, (35079), 21635 states have internal predecessors, (35079), 4811 states have call successors, (4811), 23 states have call predecessors, (4811), 27 states have return successors, (5424), 4810 states have call predecessors, (5424), 4810 states have call successors, (5424) [2023-12-21 09:46:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26467 states to 26467 states and 45314 transitions. [2023-12-21 09:46:01,949 INFO L78 Accepts]: Start accepts. Automaton has 26467 states and 45314 transitions. Word has length 159 [2023-12-21 09:46:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:01,949 INFO L495 AbstractCegarLoop]: Abstraction has 26467 states and 45314 transitions. [2023-12-21 09:46:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 26467 states and 45314 transitions. [2023-12-21 09:46:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 09:46:02,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:02,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:46:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:46:02,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:02,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1190616977, now seen corresponding path program 1 times [2023-12-21 09:46:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527488748] [2023-12-21 09:46:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:46:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:46:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:46:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:46:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:46:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:46:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:46:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:46:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:46:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 09:46:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:46:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 09:46:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:46:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527488748] [2023-12-21 09:46:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527488748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:46:02,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:46:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642863860] [2023-12-21 09:46:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:02,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:46:02,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:46:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:46:02,438 INFO L87 Difference]: Start difference. First operand 26467 states and 45314 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:04,122 INFO L93 Difference]: Finished difference Result 72031 states and 125543 transitions. [2023-12-21 09:46:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:46:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2023-12-21 09:46:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:04,400 INFO L225 Difference]: With dead ends: 72031 [2023-12-21 09:46:04,401 INFO L226 Difference]: Without dead ends: 48296 [2023-12-21 09:46:04,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:04,436 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 871 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:04,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 579 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:46:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48296 states. [2023-12-21 09:46:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48296 to 48227. [2023-12-21 09:46:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48227 states, 39673 states have (on average 1.6164898041489173) internal successors, (64131), 39680 states have internal predecessors, (64131), 8526 states have call successors, (8526), 23 states have call predecessors, (8526), 27 states have return successors, (9671), 8525 states have call predecessors, (9671), 8525 states have call successors, (9671) [2023-12-21 09:46:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48227 states to 48227 states and 82328 transitions. [2023-12-21 09:46:06,001 INFO L78 Accepts]: Start accepts. Automaton has 48227 states and 82328 transitions. Word has length 160 [2023-12-21 09:46:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:06,001 INFO L495 AbstractCegarLoop]: Abstraction has 48227 states and 82328 transitions. [2023-12-21 09:46:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 48227 states and 82328 transitions. [2023-12-21 09:46:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 09:46:06,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:06,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:46:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:46:06,094 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:06,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -344398323, now seen corresponding path program 1 times [2023-12-21 09:46:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306933979] [2023-12-21 09:46:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:46:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:46:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:46:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:46:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:46:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:46:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:46:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:46:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:46:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:46:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:46:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:46:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 09:46:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 09:46:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:46:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306933979] [2023-12-21 09:46:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306933979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:46:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 09:46:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001607594] [2023-12-21 09:46:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:06,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 09:46:06,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 09:46:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 09:46:06,374 INFO L87 Difference]: Start difference. First operand 48227 states and 82328 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:08,798 INFO L93 Difference]: Finished difference Result 89750 states and 156907 transitions. [2023-12-21 09:46:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 09:46:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2023-12-21 09:46:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:09,102 INFO L225 Difference]: With dead ends: 89750 [2023-12-21 09:46:09,103 INFO L226 Difference]: Without dead ends: 89584 [2023-12-21 09:46:09,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:09,143 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 881 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:09,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 569 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:46:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89584 states. [2023-12-21 09:46:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89584 to 89515. [2023-12-21 09:46:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89515 states, 74162 states have (on average 1.6094630673390686) internal successors, (119361), 74169 states have internal predecessors, (119361), 15325 states have call successors, (15325), 23 states have call predecessors, (15325), 27 states have return successors, (17516), 15324 states have call predecessors, (17516), 15324 states have call successors, (17516) [2023-12-21 09:46:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89515 states to 89515 states and 152202 transitions. [2023-12-21 09:46:12,210 INFO L78 Accepts]: Start accepts. Automaton has 89515 states and 152202 transitions. Word has length 161 [2023-12-21 09:46:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:12,210 INFO L495 AbstractCegarLoop]: Abstraction has 89515 states and 152202 transitions. [2023-12-21 09:46:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:46:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 89515 states and 152202 transitions. [2023-12-21 09:46:12,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 09:46:12,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:12,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:46:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 09:46:12,638 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:12,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1096137072, now seen corresponding path program 1 times [2023-12-21 09:46:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431659338] [2023-12-21 09:46:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:46:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:46:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:46:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:46:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:46:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:46:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:46:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:46:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:46:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:46:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:46:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:46:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:46:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 09:46:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:46:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431659338] [2023-12-21 09:46:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431659338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699095982] [2023-12-21 09:46:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:12,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:12,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:46:13,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 09:46:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:13,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 09:46:13,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 09:46:13,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:46:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 09:46:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699095982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:46:13,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:46:13,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2023-12-21 09:46:13,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399419274] [2023-12-21 09:46:13,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:46:13,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 09:46:13,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 09:46:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2023-12-21 09:46:13,845 INFO L87 Difference]: Start difference. First operand 89515 states and 152202 transitions. Second operand has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) [2023-12-21 09:46:36,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:36,373 INFO L93 Difference]: Finished difference Result 535137 states and 959026 transitions. [2023-12-21 09:46:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 09:46:36,374 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) Word has length 162 [2023-12-21 09:46:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:39,551 INFO L225 Difference]: With dead ends: 535137 [2023-12-21 09:46:39,551 INFO L226 Difference]: Without dead ends: 534976 [2023-12-21 09:46:39,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6456 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2630, Invalid=16830, Unknown=0, NotChecked=0, Total=19460 [2023-12-21 09:46:39,777 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 5875 mSDsluCounter, 7971 mSDsCounter, 0 mSdLazyCounter, 18652 mSolverCounterSat, 2149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5914 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 20801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2149 IncrementalHoareTripleChecker+Valid, 18652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:39,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5914 Valid, 8509 Invalid, 20801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2149 Valid, 18652 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-21 09:46:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534976 states. [2023-12-21 09:46:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534976 to 356629. [2023-12-21 09:46:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356629 states, 295594 states have (on average 1.6104048120056564) internal successors, (476026), 295402 states have internal predecessors, (476026), 60890 states have call successors, (60890), 126 states have call predecessors, (60890), 144 states have return successors, (84843), 61112 states have call predecessors, (84843), 60884 states have call successors, (84843) [2023-12-21 09:47:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356629 states to 356629 states and 621759 transitions. [2023-12-21 09:47:00,100 INFO L78 Accepts]: Start accepts. Automaton has 356629 states and 621759 transitions. Word has length 162 [2023-12-21 09:47:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:00,100 INFO L495 AbstractCegarLoop]: Abstraction has 356629 states and 621759 transitions. [2023-12-21 09:47:00,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) [2023-12-21 09:47:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 356629 states and 621759 transitions. [2023-12-21 09:47:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 09:47:01,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:01,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:01,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 09:47:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:01,237 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:01,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 304840566, now seen corresponding path program 1 times [2023-12-21 09:47:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525374688] [2023-12-21 09:47:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:47:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:47:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:47:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:47:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:47:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:47:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:47:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:47:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:47:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:47:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 09:47:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:47:01,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:01,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525374688] [2023-12-21 09:47:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525374688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:01,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:01,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338592571] [2023-12-21 09:47:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:01,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:01,383 INFO L87 Difference]: Start difference. First operand 356629 states and 621759 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:47:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:10,373 INFO L93 Difference]: Finished difference Result 357217 states and 635610 transitions. [2023-12-21 09:47:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 09:47:10,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2023-12-21 09:47:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:11,983 INFO L225 Difference]: With dead ends: 357217 [2023-12-21 09:47:11,984 INFO L226 Difference]: Without dead ends: 356575 [2023-12-21 09:47:12,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:47:12,127 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 800 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:12,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 701 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:47:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356575 states.