/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_spec9_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:05:13,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:05:13,610 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 10:05:13,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:05:13,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:05:13,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:05:13,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:05:13,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:05:13,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:05:13,647 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:05:13,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:05:13,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:05:13,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:05:13,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:05:13,649 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:05:13,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:05:13,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:05:13,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:05:13,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:05:13,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:05:13,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:05:13,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:05:13,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:05:13,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:05:13,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:05:13,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:05:13,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:05:13,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:05:13,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:05:13,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:05:13,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:05:13,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:05:13,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:05:13,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:05:13,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:05:13,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:05:13,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:05:13,839 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:05:13,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product16.cil.c [2023-12-21 10:05:14,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:05:15,078 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:05:15,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product16.cil.c [2023-12-21 10:05:15,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f641cdf7/ead1f292df8945029d59ee1f03e34b07/FLAG79883c86b [2023-12-21 10:05:15,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f641cdf7/ead1f292df8945029d59ee1f03e34b07 [2023-12-21 10:05:15,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:05:15,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:05:15,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:05:15,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:05:15,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:05:15,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b4b75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15, skipping insertion in model container [2023-12-21 10:05:15,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:05:15,473 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_spec9_product16.cil.c[33283,33296] [2023-12-21 10:05:15,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:05:15,531 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:05:15,538 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [48] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [105] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [216] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [233] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [599] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1004] [2023-12-21 10:05:15,539 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1278] [2023-12-21 10:05:15,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1316] [2023-12-21 10:05:15,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1541] [2023-12-21 10:05:15,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1550] [2023-12-21 10:05:15,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1832] [2023-12-21 10:05:15,584 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_spec9_product16.cil.c[33283,33296] [2023-12-21 10:05:15,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:05:15,629 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:05:15,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15 WrapperNode [2023-12-21 10:05:15,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:05:15,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:05:15,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:05:15,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:05:15,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,708 INFO L138 Inliner]: procedures = 126, calls = 185, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 982 [2023-12-21 10:05:15,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:05:15,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:05:15,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:05:15,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:05:15,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,752 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 10:05:15,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:05:15,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:05:15,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:05:15,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:05:15,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (1/1) ... [2023-12-21 10:05:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:05:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:15,874 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 10:05:15,906 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 10:05:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 10:05:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 10:05:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 10:05:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 10:05:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 10:05:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 10:05:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 10:05:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 10:05:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 10:05:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 10:05:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 10:05:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 10:05:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 10:05:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 10:05:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 10:05:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 10:05:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 10:05:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 10:05:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 10:05:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 10:05:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 10:05:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:05:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:05:16,069 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:05:16,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:05:16,605 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:05:16,658 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:05:16,658 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 10:05:16,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:16 BoogieIcfgContainer [2023-12-21 10:05:16,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:05:16,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:05:16,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:05:16,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:05:16,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:05:15" (1/3) ... [2023-12-21 10:05:16,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6f2f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:05:16, skipping insertion in model container [2023-12-21 10:05:16,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:15" (2/3) ... [2023-12-21 10:05:16,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6f2f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:05:16, skipping insertion in model container [2023-12-21 10:05:16,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:16" (3/3) ... [2023-12-21 10:05:16,665 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product16.cil.c [2023-12-21 10:05:16,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:05:16,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:05:16,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:05:16,715 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;@4b95194c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:05:16,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:05:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 208 states have (on average 1.6057692307692308) internal successors, (334), 212 states have internal predecessors, (334), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-21 10:05:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 10:05:16,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:16,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:16,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:16,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash 453579907, now seen corresponding path program 1 times [2023-12-21 10:05:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342567200] [2023-12-21 10:05:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 10:05:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 10:05:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 10:05:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:05:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:05:17,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342567200] [2023-12-21 10:05:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342567200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962202209] [2023-12-21 10:05:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:17,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:17,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:17,328 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 10:05:17,331 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 10:05:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 10:05:17,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:05:17,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962202209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:17,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 10:05:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908391353] [2023-12-21 10:05:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 10:05:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 10:05:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:05:17,603 INFO L87 Difference]: Start difference. First operand has 271 states, 208 states have (on average 1.6057692307692308) internal successors, (334), 212 states have internal predecessors, (334), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:17,667 INFO L93 Difference]: Finished difference Result 397 states and 611 transitions. [2023-12-21 10:05:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 10:05:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-12-21 10:05:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:17,684 INFO L225 Difference]: With dead ends: 397 [2023-12-21 10:05:17,685 INFO L226 Difference]: Without dead ends: 268 [2023-12-21 10:05:17,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 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 10:05:17,695 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:17,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-21 10:05:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-21 10:05:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 206 states have (on average 1.587378640776699) internal successors, (327), 209 states have internal predecessors, (327), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 10:05:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 416 transitions. [2023-12-21 10:05:17,764 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 416 transitions. Word has length 83 [2023-12-21 10:05:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:17,765 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 416 transitions. [2023-12-21 10:05:17,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 416 transitions. [2023-12-21 10:05:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 10:05:17,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:17,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:17,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 10:05:17,980 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 10:05:17,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:17,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1848905278, now seen corresponding path program 1 times [2023-12-21 10:05:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235163260] [2023-12-21 10:05:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 10:05:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 10:05:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 10:05:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:05:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:05:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235163260] [2023-12-21 10:05:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235163260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443665029] [2023-12-21 10:05:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:18,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:18,200 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 10:05:18,201 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 10:05:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 10:05:18,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:05:18,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443665029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:18,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:18,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 10:05:18,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239776496] [2023-12-21 10:05:18,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:18,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:05:18,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:05:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:18,472 INFO L87 Difference]: Start difference. First operand 268 states and 416 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:18,531 INFO L93 Difference]: Finished difference Result 393 states and 598 transitions. [2023-12-21 10:05:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:05:18,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2023-12-21 10:05:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:18,535 INFO L225 Difference]: With dead ends: 393 [2023-12-21 10:05:18,535 INFO L226 Difference]: Without dead ends: 270 [2023-12-21 10:05:18,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:18,538 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:18,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 803 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-21 10:05:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-21 10:05:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 208 states have (on average 1.5817307692307692) internal successors, (329), 211 states have internal predecessors, (329), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 10:05:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 418 transitions. [2023-12-21 10:05:18,556 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 418 transitions. Word has length 84 [2023-12-21 10:05:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:18,556 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 418 transitions. [2023-12-21 10:05:18,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 418 transitions. [2023-12-21 10:05:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 10:05:18,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:18,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:18,576 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 10:05:18,767 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 10:05:18,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:18,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1526686467, now seen corresponding path program 1 times [2023-12-21 10:05:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51792363] [2023-12-21 10:05:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 10:05:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:05:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:05:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:05:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51792363] [2023-12-21 10:05:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51792363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733396024] [2023-12-21 10:05:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:18,933 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 10:05:18,953 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 10:05:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:05:19,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:05:19,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:19,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733396024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 10:05:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962618028] [2023-12-21 10:05:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:19,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:05:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:05:19,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:19,141 INFO L87 Difference]: Start difference. First operand 270 states and 418 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:19,173 INFO L93 Difference]: Finished difference Result 570 states and 895 transitions. [2023-12-21 10:05:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:05:19,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2023-12-21 10:05:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:19,176 INFO L225 Difference]: With dead ends: 570 [2023-12-21 10:05:19,176 INFO L226 Difference]: Without dead ends: 322 [2023-12-21 10:05:19,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:19,177 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 102 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:19,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 772 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-21 10:05:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 317. [2023-12-21 10:05:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 244 states have (on average 1.5942622950819672) internal successors, (389), 247 states have internal predecessors, (389), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-21 10:05:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 500 transitions. [2023-12-21 10:05:19,186 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 500 transitions. Word has length 89 [2023-12-21 10:05:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:19,186 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 500 transitions. [2023-12-21 10:05:19,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 500 transitions. [2023-12-21 10:05:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 10:05:19,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:19,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:19,204 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 10:05:19,393 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 10:05:19,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:19,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 860040952, now seen corresponding path program 1 times [2023-12-21 10:05:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389599008] [2023-12-21 10:05:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 10:05:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 10:05:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:05:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 10:05:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389599008] [2023-12-21 10:05:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389599008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507098096] [2023-12-21 10:05:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:19,581 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 10:05:19,607 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 10:05:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:19,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 10:05:19,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:05:19,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:19,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507098096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:19,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:19,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 10:05:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633787932] [2023-12-21 10:05:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:05:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:05:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:05:19,876 INFO L87 Difference]: Start difference. First operand 317 states and 500 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:19,949 INFO L93 Difference]: Finished difference Result 629 states and 994 transitions. [2023-12-21 10:05:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:05:19,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2023-12-21 10:05:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:19,951 INFO L225 Difference]: With dead ends: 629 [2023-12-21 10:05:19,951 INFO L226 Difference]: Without dead ends: 319 [2023-12-21 10:05:19,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:19,953 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 8 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:19,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1561 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-21 10:05:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-12-21 10:05:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 245 states have (on average 1.5918367346938775) internal successors, (390), 249 states have internal predecessors, (390), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2023-12-21 10:05:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 503 transitions. [2023-12-21 10:05:19,962 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 503 transitions. Word has length 90 [2023-12-21 10:05:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:19,962 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 503 transitions. [2023-12-21 10:05:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 503 transitions. [2023-12-21 10:05:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 10:05:19,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:19,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:19,984 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 10:05:20,170 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 10:05:20,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:20,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1027149010, now seen corresponding path program 1 times [2023-12-21 10:05:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642222438] [2023-12-21 10:05:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 10:05:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 10:05:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 10:05:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 10:05:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:05:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 10:05:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:20,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642222438] [2023-12-21 10:05:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642222438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156621503] [2023-12-21 10:05:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:20,316 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 10:05:20,372 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 10:05:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:20,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:05:20,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:05:20,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156621503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:20,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:20,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 10:05:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169167033] [2023-12-21 10:05:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:20,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:05:20,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:05:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:05:20,589 INFO L87 Difference]: Start difference. First operand 319 states and 503 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:20,665 INFO L93 Difference]: Finished difference Result 631 states and 999 transitions. [2023-12-21 10:05:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:05:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 91 [2023-12-21 10:05:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:20,667 INFO L225 Difference]: With dead ends: 631 [2023-12-21 10:05:20,667 INFO L226 Difference]: Without dead ends: 321 [2023-12-21 10:05:20,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:05:20,668 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 8 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:20,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1547 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:05:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-21 10:05:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-12-21 10:05:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 246 states have (on average 1.589430894308943) internal successors, (391), 251 states have internal predecessors, (391), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2023-12-21 10:05:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 509 transitions. [2023-12-21 10:05:20,677 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 509 transitions. Word has length 91 [2023-12-21 10:05:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 509 transitions. [2023-12-21 10:05:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 509 transitions. [2023-12-21 10:05:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 10:05:20,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:20,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:20,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:20,888 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 10:05:20,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:20,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -45708592, now seen corresponding path program 1 times [2023-12-21 10:05:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576412512] [2023-12-21 10:05:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 10:05:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 10:05:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 10:05:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:05:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:05:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:05:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:21,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576412512] [2023-12-21 10:05:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576412512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:21,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 10:05:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501701952] [2023-12-21 10:05:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:21,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 10:05:21,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 10:05:21,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:05:21,050 INFO L87 Difference]: Start difference. First operand 321 states and 509 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:21,990 INFO L93 Difference]: Finished difference Result 738 states and 1180 transitions. [2023-12-21 10:05:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 10:05:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2023-12-21 10:05:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:21,993 INFO L225 Difference]: With dead ends: 738 [2023-12-21 10:05:21,993 INFO L226 Difference]: Without dead ends: 436 [2023-12-21 10:05:21,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:05:21,995 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 856 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:21,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 963 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-21 10:05:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 321. [2023-12-21 10:05:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 246 states have (on average 1.589430894308943) internal successors, (391), 251 states have internal predecessors, (391), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2023-12-21 10:05:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 508 transitions. [2023-12-21 10:05:22,028 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 508 transitions. Word has length 92 [2023-12-21 10:05:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:22,028 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 508 transitions. [2023-12-21 10:05:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 508 transitions. [2023-12-21 10:05:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 10:05:22,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:22,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:22,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 10:05:22,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:22,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 136611688, now seen corresponding path program 2 times [2023-12-21 10:05:22,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:22,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940249285] [2023-12-21 10:05:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 10:05:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:05:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:05:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:05:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:05:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:05:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940249285] [2023-12-21 10:05:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940249285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:22,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:22,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 10:05:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017937577] [2023-12-21 10:05:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:22,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 10:05:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 10:05:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:05:22,190 INFO L87 Difference]: Start difference. First operand 321 states and 508 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:23,116 INFO L93 Difference]: Finished difference Result 740 states and 1183 transitions. [2023-12-21 10:05:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 10:05:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2023-12-21 10:05:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:23,119 INFO L225 Difference]: With dead ends: 740 [2023-12-21 10:05:23,119 INFO L226 Difference]: Without dead ends: 438 [2023-12-21 10:05:23,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:05:23,121 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 851 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:23,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 963 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-21 10:05:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 323. [2023-12-21 10:05:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 247 states have (on average 1.5870445344129556) internal successors, (392), 253 states have internal predecessors, (392), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2023-12-21 10:05:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 511 transitions. [2023-12-21 10:05:23,160 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 511 transitions. Word has length 93 [2023-12-21 10:05:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:23,161 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 511 transitions. [2023-12-21 10:05:23,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:05:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 511 transitions. [2023-12-21 10:05:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 10:05:23,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:23,162 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 10:05:23,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:23,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1044270059, now seen corresponding path program 1 times [2023-12-21 10:05:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912185723] [2023-12-21 10:05:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:05:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 10:05:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:05:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:05:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 10:05:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912185723] [2023-12-21 10:05:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912185723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:23,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:23,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 10:05:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102352160] [2023-12-21 10:05:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:23,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 10:05:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 10:05:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:05:23,297 INFO L87 Difference]: Start difference. First operand 323 states and 511 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:05:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:25,288 INFO L93 Difference]: Finished difference Result 738 states and 1178 transitions. [2023-12-21 10:05:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 10:05:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 94 [2023-12-21 10:05:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:25,295 INFO L225 Difference]: With dead ends: 738 [2023-12-21 10:05:25,295 INFO L226 Difference]: Without dead ends: 438 [2023-12-21 10:05:25,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 10:05:25,298 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 861 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1332 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 10:05:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-21 10:05:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 323. [2023-12-21 10:05:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 247 states have (on average 1.5870445344129556) internal successors, (392), 253 states have internal predecessors, (392), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2023-12-21 10:05:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 510 transitions. [2023-12-21 10:05:25,316 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 510 transitions. Word has length 94 [2023-12-21 10:05:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:25,316 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 510 transitions. [2023-12-21 10:05:25,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:05:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 510 transitions. [2023-12-21 10:05:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 10:05:25,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:25,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 10:05:25,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:25,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -218970743, now seen corresponding path program 2 times [2023-12-21 10:05:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:25,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222216240] [2023-12-21 10:05:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 10:05:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 10:05:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:05:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:05:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:05:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:25,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222216240] [2023-12-21 10:05:25,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222216240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:25,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 10:05:25,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787369545] [2023-12-21 10:05:25,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:25,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 10:05:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 10:05:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:05:25,491 INFO L87 Difference]: Start difference. First operand 323 states and 510 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:05:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:27,389 INFO L93 Difference]: Finished difference Result 740 states and 1184 transitions. [2023-12-21 10:05:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 10:05:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 95 [2023-12-21 10:05:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:27,392 INFO L225 Difference]: With dead ends: 740 [2023-12-21 10:05:27,392 INFO L226 Difference]: Without dead ends: 440 [2023-12-21 10:05:27,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 10:05:27,393 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 856 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:27,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1332 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 10:05:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-21 10:05:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 325. [2023-12-21 10:05:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 255 states have internal predecessors, (393), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2023-12-21 10:05:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 516 transitions. [2023-12-21 10:05:27,408 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 516 transitions. Word has length 95 [2023-12-21 10:05:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:27,409 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 516 transitions. [2023-12-21 10:05:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:05:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 516 transitions. [2023-12-21 10:05:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 10:05:27,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:27,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 10:05:27,411 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:27,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash -623043066, now seen corresponding path program 1 times [2023-12-21 10:05:27,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:27,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886754725] [2023-12-21 10:05:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 10:05:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 10:05:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:05:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:05:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:27,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886754725] [2023-12-21 10:05:27,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886754725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043648817] [2023-12-21 10:05:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:27,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:27,520 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 10:05:27,594 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 10:05:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:05:27,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:27,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:05:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043648817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:05:27,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:05:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-12-21 10:05:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776756145] [2023-12-21 10:05:27,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:05:27,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:05:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:05:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:05:27,853 INFO L87 Difference]: Start difference. First operand 325 states and 516 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 10:05:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:29,142 INFO L93 Difference]: Finished difference Result 893 states and 1496 transitions. [2023-12-21 10:05:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 10:05:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 96 [2023-12-21 10:05:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:29,146 INFO L225 Difference]: With dead ends: 893 [2023-12-21 10:05:29,146 INFO L226 Difference]: Without dead ends: 770 [2023-12-21 10:05:29,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:05:29,148 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1328 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:29,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1209 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 10:05:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-12-21 10:05:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 640. [2023-12-21 10:05:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 499 states have (on average 1.6392785571142285) internal successors, (818), 506 states have internal predecessors, (818), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2023-12-21 10:05:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1079 transitions. [2023-12-21 10:05:29,170 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1079 transitions. Word has length 96 [2023-12-21 10:05:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:29,170 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1079 transitions. [2023-12-21 10:05:29,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 10:05:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1079 transitions. [2023-12-21 10:05:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 10:05:29,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:29,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:29,181 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 10:05:29,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:29,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:29,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:29,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1829812663, now seen corresponding path program 1 times [2023-12-21 10:05:29,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951735856] [2023-12-21 10:05:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:05:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:05:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:05:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:05:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:05:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:29,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:29,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951735856] [2023-12-21 10:05:29,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951735856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:29,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:29,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077134100] [2023-12-21 10:05:29,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:29,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:29,480 INFO L87 Difference]: Start difference. First operand 640 states and 1079 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:30,614 INFO L93 Difference]: Finished difference Result 1652 states and 2845 transitions. [2023-12-21 10:05:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-21 10:05:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:30,619 INFO L225 Difference]: With dead ends: 1652 [2023-12-21 10:05:30,620 INFO L226 Difference]: Without dead ends: 1072 [2023-12-21 10:05:30,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:30,622 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 945 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:30,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 739 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:05:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-12-21 10:05:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 952. [2023-12-21 10:05:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 747 states have (on average 1.6465863453815262) internal successors, (1230), 754 states have internal predecessors, (1230), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2023-12-21 10:05:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1629 transitions. [2023-12-21 10:05:30,650 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1629 transitions. Word has length 102 [2023-12-21 10:05:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:30,651 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1629 transitions. [2023-12-21 10:05:30,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1629 transitions. [2023-12-21 10:05:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 10:05:30,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:30,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 10:05:30,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash 477458031, now seen corresponding path program 1 times [2023-12-21 10:05:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762241376] [2023-12-21 10:05:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:05:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:05:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:05:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:05:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:30,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762241376] [2023-12-21 10:05:30,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762241376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:30,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866687853] [2023-12-21 10:05:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:30,715 INFO L87 Difference]: Start difference. First operand 952 states and 1629 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:31,844 INFO L93 Difference]: Finished difference Result 2401 states and 4163 transitions. [2023-12-21 10:05:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2023-12-21 10:05:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:31,852 INFO L225 Difference]: With dead ends: 2401 [2023-12-21 10:05:31,852 INFO L226 Difference]: Without dead ends: 1559 [2023-12-21 10:05:31,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:31,856 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 943 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:31,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 717 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:05:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2023-12-21 10:05:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1439. [2023-12-21 10:05:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1139 states have (on average 1.6505706760316066) internal successors, (1880), 1146 states have internal predecessors, (1880), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2023-12-21 10:05:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2469 transitions. [2023-12-21 10:05:31,956 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2469 transitions. Word has length 103 [2023-12-21 10:05:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:31,956 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2469 transitions. [2023-12-21 10:05:31,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2469 transitions. [2023-12-21 10:05:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 10:05:31,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:31,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 10:05:31,962 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:31,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 493311719, now seen corresponding path program 1 times [2023-12-21 10:05:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104512932] [2023-12-21 10:05:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:05:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:05:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:05:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 10:05:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104512932] [2023-12-21 10:05:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104512932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:32,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919999876] [2023-12-21 10:05:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:32,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:32,046 INFO L87 Difference]: Start difference. First operand 1439 states and 2469 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:33,017 INFO L93 Difference]: Finished difference Result 3503 states and 6122 transitions. [2023-12-21 10:05:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2023-12-21 10:05:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:33,028 INFO L225 Difference]: With dead ends: 3503 [2023-12-21 10:05:33,028 INFO L226 Difference]: Without dead ends: 2294 [2023-12-21 10:05:33,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:33,033 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 941 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:33,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 708 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2023-12-21 10:05:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2174. [2023-12-21 10:05:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1751 states have (on average 1.6544831524842947) internal successors, (2897), 1758 states have internal predecessors, (2897), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2023-12-21 10:05:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3748 transitions. [2023-12-21 10:05:33,131 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3748 transitions. Word has length 104 [2023-12-21 10:05:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:33,131 INFO L495 AbstractCegarLoop]: Abstraction has 2174 states and 3748 transitions. [2023-12-21 10:05:33,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3748 transitions. [2023-12-21 10:05:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 10:05:33,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:33,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 10:05:33,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:33,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1393428050, now seen corresponding path program 1 times [2023-12-21 10:05:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:33,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655960934] [2023-12-21 10:05:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:05:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:05:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:05:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 10:05:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 10:05:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:33,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:33,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655960934] [2023-12-21 10:05:33,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655960934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:33,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173681352] [2023-12-21 10:05:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:33,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:33,257 INFO L87 Difference]: Start difference. First operand 2174 states and 3748 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:34,169 INFO L93 Difference]: Finished difference Result 5213 states and 9172 transitions. [2023-12-21 10:05:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:34,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2023-12-21 10:05:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:34,184 INFO L225 Difference]: With dead ends: 5213 [2023-12-21 10:05:34,184 INFO L226 Difference]: Without dead ends: 3466 [2023-12-21 10:05:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:34,190 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 939 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:34,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 708 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2023-12-21 10:05:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3346. [2023-12-21 10:05:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 2744 states have (on average 1.657069970845481) internal successors, (4547), 2751 states have internal predecessors, (4547), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2023-12-21 10:05:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 5782 transitions. [2023-12-21 10:05:34,282 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 5782 transitions. Word has length 105 [2023-12-21 10:05:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:34,282 INFO L495 AbstractCegarLoop]: Abstraction has 3346 states and 5782 transitions. [2023-12-21 10:05:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 5782 transitions. [2023-12-21 10:05:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 10:05:34,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:34,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:34,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 10:05:34,339 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:34,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1044137003, now seen corresponding path program 1 times [2023-12-21 10:05:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413274987] [2023-12-21 10:05:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:05:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:05:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:05:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 10:05:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:05:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:34,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413274987] [2023-12-21 10:05:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413274987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:34,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454712375] [2023-12-21 10:05:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:34,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:34,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:34,399 INFO L87 Difference]: Start difference. First operand 3346 states and 5782 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:35,487 INFO L93 Difference]: Finished difference Result 8068 states and 14226 transitions. [2023-12-21 10:05:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-12-21 10:05:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:35,508 INFO L225 Difference]: With dead ends: 8068 [2023-12-21 10:05:35,509 INFO L226 Difference]: Without dead ends: 5436 [2023-12-21 10:05:35,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:35,516 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 937 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:35,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 740 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 10:05:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2023-12-21 10:05:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5316. [2023-12-21 10:05:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 4338 states have (on average 1.6454587367450437) internal successors, (7138), 4345 states have internal predecessors, (7138), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2023-12-21 10:05:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 9169 transitions. [2023-12-21 10:05:35,741 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 9169 transitions. Word has length 106 [2023-12-21 10:05:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:35,741 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 9169 transitions. [2023-12-21 10:05:35,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 9169 transitions. [2023-12-21 10:05:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 10:05:35,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:35,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 10:05:35,751 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:35,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1541707882, now seen corresponding path program 1 times [2023-12-21 10:05:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:35,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557659852] [2023-12-21 10:05:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:35,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:05:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:05:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 10:05:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 10:05:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557659852] [2023-12-21 10:05:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557659852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:35,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:35,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812458780] [2023-12-21 10:05:35,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:35,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:35,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:35,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:35,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:35,820 INFO L87 Difference]: Start difference. First operand 5316 states and 9169 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:36,958 INFO L93 Difference]: Finished difference Result 13205 states and 23247 transitions. [2023-12-21 10:05:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2023-12-21 10:05:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:37,005 INFO L225 Difference]: With dead ends: 13205 [2023-12-21 10:05:37,006 INFO L226 Difference]: Without dead ends: 8969 [2023-12-21 10:05:37,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:37,035 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 935 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:37,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 709 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 10:05:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8969 states. [2023-12-21 10:05:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8969 to 8849. [2023-12-21 10:05:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8849 states, 7265 states have (on average 1.6426703372333105) internal successors, (11934), 7272 states have internal predecessors, (11934), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2023-12-21 10:05:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8849 states to 8849 states and 15255 transitions. [2023-12-21 10:05:37,395 INFO L78 Accepts]: Start accepts. Automaton has 8849 states and 15255 transitions. Word has length 107 [2023-12-21 10:05:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:37,396 INFO L495 AbstractCegarLoop]: Abstraction has 8849 states and 15255 transitions. [2023-12-21 10:05:37,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8849 states and 15255 transitions. [2023-12-21 10:05:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 10:05:37,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:37,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 10:05:37,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:37,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -209401347, now seen corresponding path program 1 times [2023-12-21 10:05:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050769813] [2023-12-21 10:05:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:05:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:05:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:05:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 10:05:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 10:05:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050769813] [2023-12-21 10:05:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050769813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:37,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:37,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284358947] [2023-12-21 10:05:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:37,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:37,486 INFO L87 Difference]: Start difference. First operand 8849 states and 15255 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:38,674 INFO L93 Difference]: Finished difference Result 22977 states and 40381 transitions. [2023-12-21 10:05:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2023-12-21 10:05:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:38,715 INFO L225 Difference]: With dead ends: 22977 [2023-12-21 10:05:38,716 INFO L226 Difference]: Without dead ends: 15641 [2023-12-21 10:05:38,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:38,735 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 933 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 742 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 10:05:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2023-12-21 10:05:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 15521. [2023-12-21 10:05:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15521 states, 12734 states have (on average 1.633029684309722) internal successors, (20795), 12741 states have internal predecessors, (20795), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2023-12-21 10:05:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15521 states to 15521 states and 26666 transitions. [2023-12-21 10:05:39,177 INFO L78 Accepts]: Start accepts. Automaton has 15521 states and 26666 transitions. Word has length 108 [2023-12-21 10:05:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 15521 states and 26666 transitions. [2023-12-21 10:05:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15521 states and 26666 transitions. [2023-12-21 10:05:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 10:05:39,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:39,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:39,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 10:05:39,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:39,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash 26754697, now seen corresponding path program 1 times [2023-12-21 10:05:39,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:39,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262095759] [2023-12-21 10:05:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:05:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:05:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:05:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 10:05:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262095759] [2023-12-21 10:05:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262095759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:39,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999981826] [2023-12-21 10:05:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:39,262 INFO L87 Difference]: Start difference. First operand 15521 states and 26666 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:40,739 INFO L93 Difference]: Finished difference Result 41144 states and 72181 transitions. [2023-12-21 10:05:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2023-12-21 10:05:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:40,811 INFO L225 Difference]: With dead ends: 41144 [2023-12-21 10:05:40,811 INFO L226 Difference]: Without dead ends: 27756 [2023-12-21 10:05:40,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:40,836 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 931 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:40,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 712 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:40,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27756 states. [2023-12-21 10:05:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27756 to 27636. [2023-12-21 10:05:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27636 states, 22810 states have (on average 1.6290661990355106) internal successors, (37159), 22817 states have internal predecessors, (37159), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2023-12-21 10:05:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27636 states to 27636 states and 47382 transitions. [2023-12-21 10:05:41,635 INFO L78 Accepts]: Start accepts. Automaton has 27636 states and 47382 transitions. Word has length 109 [2023-12-21 10:05:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:41,635 INFO L495 AbstractCegarLoop]: Abstraction has 27636 states and 47382 transitions. [2023-12-21 10:05:41,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 27636 states and 47382 transitions. [2023-12-21 10:05:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:05:41,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:41,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:41,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 10:05:41,667 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -430168613, now seen corresponding path program 1 times [2023-12-21 10:05:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389347815] [2023-12-21 10:05:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:05:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:05:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 10:05:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:05:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 10:05:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:41,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:41,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389347815] [2023-12-21 10:05:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389347815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:41,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351992990] [2023-12-21 10:05:41,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:41,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:41,736 INFO L87 Difference]: Start difference. First operand 27636 states and 47382 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:43,772 INFO L93 Difference]: Finished difference Result 75336 states and 131370 transitions. [2023-12-21 10:05:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:43,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2023-12-21 10:05:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:44,107 INFO L225 Difference]: With dead ends: 75336 [2023-12-21 10:05:44,108 INFO L226 Difference]: Without dead ends: 50580 [2023-12-21 10:05:44,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:44,144 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 929 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:44,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 715 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:05:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50580 states. [2023-12-21 10:05:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50580 to 50460. [2023-12-21 10:05:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50460 states, 41919 states have (on average 1.6239175552851928) internal successors, (68073), 41926 states have internal predecessors, (68073), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2023-12-21 10:05:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50460 states to 50460 states and 86258 transitions. [2023-12-21 10:05:45,816 INFO L78 Accepts]: Start accepts. Automaton has 50460 states and 86258 transitions. Word has length 110 [2023-12-21 10:05:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:45,817 INFO L495 AbstractCegarLoop]: Abstraction has 50460 states and 86258 transitions. [2023-12-21 10:05:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 50460 states and 86258 transitions. [2023-12-21 10:05:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 10:05:45,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:45,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:45,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 10:05:45,834 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:45,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash -437264791, now seen corresponding path program 1 times [2023-12-21 10:05:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845840464] [2023-12-21 10:05:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:05:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 10:05:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 10:05:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 10:05:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845840464] [2023-12-21 10:05:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845840464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:45,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112920485] [2023-12-21 10:05:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:45,913 INFO L87 Difference]: Start difference. First operand 50460 states and 86258 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:48,552 INFO L93 Difference]: Finished difference Result 94083 states and 164533 transitions. [2023-12-21 10:05:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2023-12-21 10:05:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:48,911 INFO L225 Difference]: With dead ends: 94083 [2023-12-21 10:05:48,911 INFO L226 Difference]: Without dead ends: 93960 [2023-12-21 10:05:48,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:05:48,950 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 927 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:48,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 709 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93960 states. [2023-12-21 10:05:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93960 to 93840. [2023-12-21 10:05:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93840 states, 78500 states have (on average 1.617375796178344) internal successors, (126964), 78507 states have internal predecessors, (126964), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2023-12-21 10:05:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93840 states to 93840 states and 159793 transitions. [2023-12-21 10:05:52,246 INFO L78 Accepts]: Start accepts. Automaton has 93840 states and 159793 transitions. Word has length 111 [2023-12-21 10:05:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:52,247 INFO L495 AbstractCegarLoop]: Abstraction has 93840 states and 159793 transitions. [2023-12-21 10:05:52,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:05:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 93840 states and 159793 transitions. [2023-12-21 10:05:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 10:05:52,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:52,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:52,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 10:05:52,283 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:52,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 662008892, now seen corresponding path program 1 times [2023-12-21 10:05:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:52,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414509888] [2023-12-21 10:05:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:52,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:05:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 10:05:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 10:05:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414509888] [2023-12-21 10:05:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414509888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 10:05:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807390743] [2023-12-21 10:05:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 10:05:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 10:05:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:05:52,871 INFO L87 Difference]: Start difference. First operand 93840 states and 159793 transitions. Second operand has 16 states, 15 states have (on average 5.0) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 10:05:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:59,953 INFO L93 Difference]: Finished difference Result 187329 states and 330974 transitions. [2023-12-21 10:05:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 10:05:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 112 [2023-12-21 10:05:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:00,937 INFO L225 Difference]: With dead ends: 187329 [2023-12-21 10:06:00,937 INFO L226 Difference]: Without dead ends: 187211 [2023-12-21 10:06:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=698, Invalid=2842, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 10:06:01,002 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 3353 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 6153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 5120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:01,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3364 Valid, 1989 Invalid, 6153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 10:06:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187211 states. [2023-12-21 10:06:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187211 to 186870. [2023-12-21 10:06:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186870 states, 156390 states have (on average 1.6182748257561226) internal successors, (253082), 156293 states have internal predecessors, (253082), 30430 states have call successors, (30430), 41 states have call predecessors, (30430), 49 states have return successors, (38087), 30541 states have call predecessors, (38087), 30427 states have call successors, (38087) [2023-12-21 10:06:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186870 states to 186870 states and 321599 transitions. [2023-12-21 10:06:08,410 INFO L78 Accepts]: Start accepts. Automaton has 186870 states and 321599 transitions. Word has length 112 [2023-12-21 10:06:08,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:08,410 INFO L495 AbstractCegarLoop]: Abstraction has 186870 states and 321599 transitions. [2023-12-21 10:06:08,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 10:06:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 186870 states and 321599 transitions. [2023-12-21 10:06:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 10:06:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:08,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 10:06:08,451 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:08,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1347202769, now seen corresponding path program 1 times [2023-12-21 10:06:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:08,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69244479] [2023-12-21 10:06:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:06:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:06:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:06:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:06:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:06:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 10:06:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:06:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:08,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69244479] [2023-12-21 10:06:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69244479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:08,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:08,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 10:06:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124568581] [2023-12-21 10:06:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:08,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 10:06:08,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 10:06:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:06:08,585 INFO L87 Difference]: Start difference. First operand 186870 states and 321599 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:06:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:14,170 INFO L93 Difference]: Finished difference Result 188033 states and 329921 transitions. [2023-12-21 10:06:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 10:06:14,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 113 [2023-12-21 10:06:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:14,989 INFO L225 Difference]: With dead ends: 188033 [2023-12-21 10:06:14,989 INFO L226 Difference]: Without dead ends: 187265 [2023-12-21 10:06:15,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-21 10:06:15,055 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1946 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:15,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 1180 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 10:06:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187265 states. [2023-12-21 10:06:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187265 to 186932. [2023-12-21 10:06:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186932 states, 156437 states have (on average 1.6182041332932746) internal successors, (253147), 156341 states have internal predecessors, (253147), 30445 states have call successors, (30445), 44 states have call predecessors, (30445), 49 states have return successors, (38103), 30555 states have call predecessors, (38103), 30442 states have call successors, (38103) [2023-12-21 10:06:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186932 states to 186932 states and 321695 transitions. [2023-12-21 10:06:21,781 INFO L78 Accepts]: Start accepts. Automaton has 186932 states and 321695 transitions. Word has length 113 [2023-12-21 10:06:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 186932 states and 321695 transitions. [2023-12-21 10:06:21,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-21 10:06:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 186932 states and 321695 transitions. [2023-12-21 10:06:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 10:06:21,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:21,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 10:06:21,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:21,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1708467463, now seen corresponding path program 1 times [2023-12-21 10:06:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343822064] [2023-12-21 10:06:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:06:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:06:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:06:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:06:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:06:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 10:06:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:06:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343822064] [2023-12-21 10:06:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343822064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:22,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 10:06:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214460366] [2023-12-21 10:06:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 10:06:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 10:06:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:06:22,355 INFO L87 Difference]: Start difference. First operand 186932 states and 321695 transitions. Second operand has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 10:06:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:33,628 INFO L93 Difference]: Finished difference Result 371689 states and 663522 transitions. [2023-12-21 10:06:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 10:06:33,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 113 [2023-12-21 10:06:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:35,236 INFO L225 Difference]: With dead ends: 371689 [2023-12-21 10:06:35,236 INFO L226 Difference]: Without dead ends: 371345 [2023-12-21 10:06:35,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=767, Invalid=3139, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 10:06:35,381 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3372 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 6335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:35,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3372 Valid, 1683 Invalid, 6335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 5254 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 10:06:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371345 states. [2023-12-21 10:06:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371345 to 370583. [2023-12-21 10:06:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370583 states, 310244 states have (on average 1.6195639561119635) internal successors, (502460), 309879 states have internal predecessors, (502460), 60233 states have call successors, (60233), 94 states have call predecessors, (60233), 105 states have return successors, (84074), 60630 states have call predecessors, (84074), 60226 states have call successors, (84074) [2023-12-21 10:06:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370583 states to 370583 states and 646767 transitions. [2023-12-21 10:06:51,545 INFO L78 Accepts]: Start accepts. Automaton has 370583 states and 646767 transitions. Word has length 113 [2023-12-21 10:06:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:51,547 INFO L495 AbstractCegarLoop]: Abstraction has 370583 states and 646767 transitions. [2023-12-21 10:06:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 10:06:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 370583 states and 646767 transitions. [2023-12-21 10:06:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 10:06:51,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:51,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:51,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 10:06:51,600 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:51,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1285765637, now seen corresponding path program 1 times [2023-12-21 10:06:51,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731522048] [2023-12-21 10:06:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:51,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:06:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:06:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:06:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:06:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:06:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 10:06:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:06:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:52,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731522048] [2023-12-21 10:06:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731522048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:06:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823441144] [2023-12-21 10:06:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:52,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:06:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:06:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:06:52,066 INFO L87 Difference]: Start difference. First operand 370583 states and 646767 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)