/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_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:47:46,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:47:46,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 09:47:46,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:47:46,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:47:46,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:47:46,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:47:46,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:47:46,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:47:46,654 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:47:46,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:47:46,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:47:46,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:47:46,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:47:46,656 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:47:46,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:47:46,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:47:46,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:47:46,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:47:46,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:47:46,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:47:46,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:47:46,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:47:46,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:47:46,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:47:46,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:47:46,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:47:46,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:47:46,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:47:46,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:47:46,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:47:46,661 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:47:46,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:47:46,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:47:46,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:47:46,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:47:46,825 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:47:46,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2023-12-21 09:47:47,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:47:48,205 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:47:48,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2023-12-21 09:47:48,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f448860f4/f6202c558dbc40c8bdadc564c64ec132/FLAG0043dc45b [2023-12-21 09:47:48,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f448860f4/f6202c558dbc40c8bdadc564c64ec132 [2023-12-21 09:47:48,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:47:48,236 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:47:48,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:47:48,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:47:48,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:47:48,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:48,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec401a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48, skipping insertion in model container [2023-12-21 09:47:48,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:48,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:47:48,645 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_spec3_product18.cil.c[42127,42140] [2023-12-21 09:47:48,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:47:48,751 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:47:48,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-12-21 09:47:48,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [97] [2023-12-21 09:47:48,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1177] [2023-12-21 09:47:48,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1470] [2023-12-21 09:47:48,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1836] [2023-12-21 09:47:48,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1845] [2023-12-21 09:47:48,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2147] [2023-12-21 09:47:48,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2550] [2023-12-21 09:47:48,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2608] [2023-12-21 09:47:48,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2824] [2023-12-21 09:47:48,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2921] [2023-12-21 09:47:48,846 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_spec3_product18.cil.c[42127,42140] [2023-12-21 09:47:48,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:47:48,942 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:47:48,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48 WrapperNode [2023-12-21 09:47:48,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:47:48,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:47:48,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:47:48,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:47:48,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:48,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,026 INFO L138 Inliner]: procedures = 128, calls = 192, calls flagged for inlining = 57, calls inlined = 48, statements flattened = 868 [2023-12-21 09:47:49,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:47:49,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:47:49,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:47:49,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:47:49,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,090 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-21 09:47:49,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:47:49,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:47:49,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:47:49,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:47:49,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (1/1) ... [2023-12-21 09:47:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:47:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:49,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 09:47:49,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 09:47:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:47:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:47:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:47:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:47:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:47:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:47:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:47:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:47:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:47:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-21 09:47:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:47:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:47:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:47:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:47:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:47:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:47:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:47:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:47:49,457 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:47:49,459 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:47:49,912 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:47:49,965 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:47:49,966 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:47:49,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:47:49 BoogieIcfgContainer [2023-12-21 09:47:49,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:47:49,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:47:49,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:47:49,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:47:49,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:47:48" (1/3) ... [2023-12-21 09:47:49,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee80692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:47:49, skipping insertion in model container [2023-12-21 09:47:49,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:47:48" (2/3) ... [2023-12-21 09:47:49,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee80692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:47:49, skipping insertion in model container [2023-12-21 09:47:49,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:47:49" (3/3) ... [2023-12-21 09:47:49,972 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2023-12-21 09:47:49,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:47:49,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:47:50,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:47:50,038 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;@60914b09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:47:50,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:47:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 213 states have (on average 1.596244131455399) internal successors, (340), 217 states have internal predecessors, (340), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 09:47:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 09:47:50,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:50,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:50,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:50,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1909930120, now seen corresponding path program 1 times [2023-12-21 09:47:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960779938] [2023-12-21 09:47:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:47:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:47:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:47:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:47:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:47:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:47:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:47:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:47:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:47:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:47:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,655 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 09:47:50,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:50,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960779938] [2023-12-21 09:47:50,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960779938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722329122] [2023-12-21 09:47:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:50,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:50,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:50,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:47:50,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 09:47:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:50,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:47:50,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:51,004 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 09:47:51,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:47:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722329122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:51,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:47:51,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:47:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582759146] [2023-12-21 09:47:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:51,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:47:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:47:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:47:51,040 INFO L87 Difference]: Start difference. First operand has 280 states, 213 states have (on average 1.596244131455399) internal successors, (340), 217 states have internal predecessors, (340), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:51,125 INFO L93 Difference]: Finished difference Result 414 states and 627 transitions. [2023-12-21 09:47:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:47:51,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2023-12-21 09:47:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:51,143 INFO L225 Difference]: With dead ends: 414 [2023-12-21 09:47:51,143 INFO L226 Difference]: Without dead ends: 276 [2023-12-21 09:47:51,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:47:51,148 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:51,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:47:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-21 09:47:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-12-21 09:47:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 211 states have (on average 1.5781990521327014) internal successors, (333), 213 states have internal predecessors, (333), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-21 09:47:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 422 transitions. [2023-12-21 09:47:51,222 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 422 transitions. Word has length 96 [2023-12-21 09:47:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 422 transitions. [2023-12-21 09:47:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 422 transitions. [2023-12-21 09:47:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 09:47:51,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:51,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:51,242 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 09:47:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 09:47:51,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:51,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1901730742, now seen corresponding path program 1 times [2023-12-21 09:47:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782886110] [2023-12-21 09:47:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:47:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:47:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:47:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:47:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:47:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:47:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:47:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:47:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:47:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:47:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:51,694 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 09:47:51,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782886110] [2023-12-21 09:47:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782886110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825305799] [2023-12-21 09:47:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:51,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:51,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:51,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:47:51,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 09:47:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:47:52,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:52,049 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 09:47:52,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:47:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825305799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:52,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:47:52,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:47:52,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507598392] [2023-12-21 09:47:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:47:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:47:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:47:52,054 INFO L87 Difference]: Start difference. First operand 276 states and 422 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:52,106 INFO L93 Difference]: Finished difference Result 409 states and 610 transitions. [2023-12-21 09:47:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:47:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2023-12-21 09:47:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:52,110 INFO L225 Difference]: With dead ends: 409 [2023-12-21 09:47:52,110 INFO L226 Difference]: Without dead ends: 278 [2023-12-21 09:47:52,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 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 09:47:52,116 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 0 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:52,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 817 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:47:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-21 09:47:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-21 09:47:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 213 states have (on average 1.5727699530516432) internal successors, (335), 215 states have internal predecessors, (335), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-21 09:47:52,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 424 transitions. [2023-12-21 09:47:52,141 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 424 transitions. Word has length 97 [2023-12-21 09:47:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:52,142 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 424 transitions. [2023-12-21 09:47:52,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 424 transitions. [2023-12-21 09:47:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 09:47:52,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:52,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:52,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 09:47:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:47:52,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash -939872801, now seen corresponding path program 1 times [2023-12-21 09:47:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372751408] [2023-12-21 09:47:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:47:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:47:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:47:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:47:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:47:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:47:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:47:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:47:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:47:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:47:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,549 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 09:47:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372751408] [2023-12-21 09:47:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372751408] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576997511] [2023-12-21 09:47:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:52,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:47:52,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 09:47:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:52,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:47:52,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:52,810 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 09:47:52,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:47:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576997511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:47:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:47:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289214436] [2023-12-21 09:47:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:47:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:47:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:47:52,812 INFO L87 Difference]: Start difference. First operand 278 states and 424 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:52,854 INFO L93 Difference]: Finished difference Result 586 states and 907 transitions. [2023-12-21 09:47:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:47:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-12-21 09:47:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:52,857 INFO L225 Difference]: With dead ends: 586 [2023-12-21 09:47:52,857 INFO L226 Difference]: Without dead ends: 330 [2023-12-21 09:47:52,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 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 09:47:52,864 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 102 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:52,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 782 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:47:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-21 09:47:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2023-12-21 09:47:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 249 states have (on average 1.5863453815261044) internal successors, (395), 251 states have internal predecessors, (395), 57 states have call successors, (57), 19 states have call predecessors, (57), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 09:47:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 506 transitions. [2023-12-21 09:47:52,878 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 506 transitions. Word has length 104 [2023-12-21 09:47:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:52,879 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 506 transitions. [2023-12-21 09:47:52,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:47:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 506 transitions. [2023-12-21 09:47:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 09:47:52,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:52,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:52,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 09:47:53,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:53,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:53,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash -9365101, now seen corresponding path program 1 times [2023-12-21 09:47:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228273913] [2023-12-21 09:47:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:47:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:47:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:47:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:47:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:47:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:47:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:47:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:47:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:47:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:47:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,257 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 09:47:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228273913] [2023-12-21 09:47:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228273913] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208003252] [2023-12-21 09:47:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:53,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:53,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:47:53,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 09:47:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:47:53,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:53,521 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 09:47:53,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:47:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208003252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:53,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:47:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:47:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844173779] [2023-12-21 09:47:53,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:47:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:47:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:47:53,523 INFO L87 Difference]: Start difference. First operand 325 states and 506 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:53,600 INFO L93 Difference]: Finished difference Result 645 states and 1006 transitions. [2023-12-21 09:47:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:47:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-12-21 09:47:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:53,604 INFO L225 Difference]: With dead ends: 645 [2023-12-21 09:47:53,604 INFO L226 Difference]: Without dead ends: 327 [2023-12-21 09:47:53,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 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 09:47:53,607 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 8 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:53,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1589 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:47:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-21 09:47:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-12-21 09:47:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 250 states have (on average 1.584) internal successors, (396), 253 states have internal predecessors, (396), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2023-12-21 09:47:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 509 transitions. [2023-12-21 09:47:53,622 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 509 transitions. Word has length 105 [2023-12-21 09:47:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:53,622 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 509 transitions. [2023-12-21 09:47:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 509 transitions. [2023-12-21 09:47:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 09:47:53,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:53,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:53,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 09:47:53,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:53,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:53,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash -486732218, now seen corresponding path program 1 times [2023-12-21 09:47:53,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:53,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259712268] [2023-12-21 09:47:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:47:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:47:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:47:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:47:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:47:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:47:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:47:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:47:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:47:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,007 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 09:47:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259712268] [2023-12-21 09:47:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259712268] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660624214] [2023-12-21 09:47:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:54,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:54,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:47:54,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 09:47:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:47:54,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:54,311 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 09:47:54,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:47:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660624214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:47:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:47:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571207347] [2023-12-21 09:47:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:54,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:47:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:47:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:47:54,313 INFO L87 Difference]: Start difference. First operand 327 states and 509 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:54,390 INFO L93 Difference]: Finished difference Result 647 states and 1011 transitions. [2023-12-21 09:47:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:47:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2023-12-21 09:47:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:54,393 INFO L225 Difference]: With dead ends: 647 [2023-12-21 09:47:54,393 INFO L226 Difference]: Without dead ends: 329 [2023-12-21 09:47:54,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 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 09:47:54,394 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 8 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:54,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1575 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:47:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-21 09:47:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-12-21 09:47:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 251 states have (on average 1.5816733067729083) internal successors, (397), 255 states have internal predecessors, (397), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2023-12-21 09:47:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 515 transitions. [2023-12-21 09:47:54,406 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 515 transitions. Word has length 106 [2023-12-21 09:47:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:54,406 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 515 transitions. [2023-12-21 09:47:54,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 515 transitions. [2023-12-21 09:47:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 09:47:54,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:54,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:54,424 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 09:47:54,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:54,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:54,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:54,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1502571187, now seen corresponding path program 1 times [2023-12-21 09:47:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061261945] [2023-12-21 09:47:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:54,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:47:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:47:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:47:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:47:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:47:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:47:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:47:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:47:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:54,771 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 09:47:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061261945] [2023-12-21 09:47:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061261945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:54,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:47:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966054268] [2023-12-21 09:47:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:47:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:47:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:47:54,773 INFO L87 Difference]: Start difference. First operand 329 states and 515 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:56,014 INFO L93 Difference]: Finished difference Result 718 states and 1135 transitions. [2023-12-21 09:47:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:47:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-12-21 09:47:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:56,016 INFO L225 Difference]: With dead ends: 718 [2023-12-21 09:47:56,016 INFO L226 Difference]: Without dead ends: 408 [2023-12-21 09:47:56,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:47:56,017 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 881 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:56,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 962 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:47:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-21 09:47:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 329. [2023-12-21 09:47:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 251 states have (on average 1.5816733067729083) internal successors, (397), 255 states have internal predecessors, (397), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2023-12-21 09:47:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 514 transitions. [2023-12-21 09:47:56,034 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 514 transitions. Word has length 107 [2023-12-21 09:47:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:56,034 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 514 transitions. [2023-12-21 09:47:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 514 transitions. [2023-12-21 09:47:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 09:47:56,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:56,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:47:56,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:56,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1499312252, now seen corresponding path program 2 times [2023-12-21 09:47:56,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319166579] [2023-12-21 09:47:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:47:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:47:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:47:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:47:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:47:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:47:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:47:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:47:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:56,155 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 09:47:56,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:56,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319166579] [2023-12-21 09:47:56,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319166579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:56,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:47:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356127113] [2023-12-21 09:47:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:56,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:47:56,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:47:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:47:56,156 INFO L87 Difference]: Start difference. First operand 329 states and 514 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:57,210 INFO L93 Difference]: Finished difference Result 720 states and 1138 transitions. [2023-12-21 09:47:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:47:57,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-12-21 09:47:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:57,214 INFO L225 Difference]: With dead ends: 720 [2023-12-21 09:47:57,214 INFO L226 Difference]: Without dead ends: 410 [2023-12-21 09:47:57,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 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 09:47:57,216 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 875 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:57,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 963 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:47:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-21 09:47:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 331. [2023-12-21 09:47:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 252 states have (on average 1.5793650793650793) internal successors, (398), 257 states have internal predecessors, (398), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (62), 54 states have call predecessors, (62), 54 states have call successors, (62) [2023-12-21 09:47:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 517 transitions. [2023-12-21 09:47:57,243 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 517 transitions. Word has length 108 [2023-12-21 09:47:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:57,243 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 517 transitions. [2023-12-21 09:47:57,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:47:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 517 transitions. [2023-12-21 09:47:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 09:47:57,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:57,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:47:57,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:57,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash -754344, now seen corresponding path program 1 times [2023-12-21 09:47:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040288705] [2023-12-21 09:47:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:47:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:47:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:47:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:47:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:47:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:47:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:47:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:57,409 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 09:47:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040288705] [2023-12-21 09:47:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040288705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:57,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:57,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:47:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117607983] [2023-12-21 09:47:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:57,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:47:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:47:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:47:57,410 INFO L87 Difference]: Start difference. First operand 331 states and 517 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 09:47:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:58,797 INFO L93 Difference]: Finished difference Result 718 states and 1133 transitions. [2023-12-21 09:47:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:47:58,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-12-21 09:47:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:58,800 INFO L225 Difference]: With dead ends: 718 [2023-12-21 09:47:58,800 INFO L226 Difference]: Without dead ends: 410 [2023-12-21 09:47:58,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 09:47:58,802 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 886 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:58,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1331 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:47:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-21 09:47:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 331. [2023-12-21 09:47:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 252 states have (on average 1.5793650793650793) internal successors, (398), 257 states have internal predecessors, (398), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2023-12-21 09:47:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 516 transitions. [2023-12-21 09:47:58,816 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 516 transitions. Word has length 109 [2023-12-21 09:47:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:58,817 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 516 transitions. [2023-12-21 09:47:58,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 09:47:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 516 transitions. [2023-12-21 09:47:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 09:47:58,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:58,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:47:58,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:58,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1339615483, now seen corresponding path program 2 times [2023-12-21 09:47:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758449217] [2023-12-21 09:47:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:58,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:47:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:47:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:47:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:47:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:47:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:47:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:47:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:58,999 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 09:47:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758449217] [2023-12-21 09:47:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758449217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:47:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047810288] [2023-12-21 09:47:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:47:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:47:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:47:59,000 INFO L87 Difference]: Start difference. First operand 331 states and 516 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 09:48:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:00,616 INFO L93 Difference]: Finished difference Result 720 states and 1139 transitions. [2023-12-21 09:48:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:48:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 110 [2023-12-21 09:48:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:00,620 INFO L225 Difference]: With dead ends: 720 [2023-12-21 09:48:00,620 INFO L226 Difference]: Without dead ends: 412 [2023-12-21 09:48:00,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 09:48:00,621 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 881 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:00,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1331 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:48:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-21 09:48:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 333. [2023-12-21 09:48:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 259 states have internal predecessors, (399), 57 states have call successors, (57), 19 states have call predecessors, (57), 22 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2023-12-21 09:48:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 522 transitions. [2023-12-21 09:48:00,637 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 522 transitions. Word has length 110 [2023-12-21 09:48:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:00,638 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 522 transitions. [2023-12-21 09:48:00,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 09:48:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 522 transitions. [2023-12-21 09:48:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 09:48:00,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:00,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:48:00,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:00,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:00,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1817997821, now seen corresponding path program 1 times [2023-12-21 09:48:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204420101] [2023-12-21 09:48:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:48:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:48:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:48:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:48:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:48:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:48:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:48:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 09:48:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204420101] [2023-12-21 09:48:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204420101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:48:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951038732] [2023-12-21 09:48:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:48:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:48:00,813 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:48:00,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 09:48:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:01,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:48:01,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:48:01,092 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 09:48:01,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:48:01,164 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 09:48:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951038732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:48:01,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:48:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-21 09:48:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350480674] [2023-12-21 09:48:01,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:48:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:48:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:48:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:48:01,166 INFO L87 Difference]: Start difference. First operand 333 states and 522 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-21 09:48:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:03,202 INFO L93 Difference]: Finished difference Result 1049 states and 1750 transitions. [2023-12-21 09:48:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:48:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 111 [2023-12-21 09:48:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:03,206 INFO L225 Difference]: With dead ends: 1049 [2023-12-21 09:48:03,206 INFO L226 Difference]: Without dead ends: 742 [2023-12-21 09:48:03,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:48:03,209 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1804 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 3996 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 4553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 3996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:03,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 1579 Invalid, 4553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 3996 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:48:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-21 09:48:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 648. [2023-12-21 09:48:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 504 states have (on average 1.621031746031746) internal successors, (817), 510 states have internal predecessors, (817), 121 states have call successors, (121), 19 states have call predecessors, (121), 22 states have return successors, (140), 118 states have call predecessors, (140), 118 states have call successors, (140) [2023-12-21 09:48:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1078 transitions. [2023-12-21 09:48:03,244 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1078 transitions. Word has length 111 [2023-12-21 09:48:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:03,244 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1078 transitions. [2023-12-21 09:48:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-21 09:48:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1078 transitions. [2023-12-21 09:48:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 09:48:03,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:03,247 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, 1, 1] [2023-12-21 09:48:03,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 09:48:03,453 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 09:48:03,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash -261678472, now seen corresponding path program 1 times [2023-12-21 09:48:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252644514] [2023-12-21 09:48:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:48:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:48:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:48:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:48:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:48:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:48:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:48:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:03,529 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 09:48:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252644514] [2023-12-21 09:48:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252644514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:03,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415580713] [2023-12-21 09:48:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:03,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:03,531 INFO L87 Difference]: Start difference. First operand 648 states and 1078 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:04,493 INFO L93 Difference]: Finished difference Result 1604 states and 2739 transitions. [2023-12-21 09:48:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:04,493 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2023-12-21 09:48:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:04,498 INFO L225 Difference]: With dead ends: 1604 [2023-12-21 09:48:04,498 INFO L226 Difference]: Without dead ends: 1024 [2023-12-21 09:48:04,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:04,500 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 968 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:04,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 718 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:48:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2023-12-21 09:48:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 940. [2023-12-21 09:48:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 732 states have (on average 1.6311475409836065) internal successors, (1194), 738 states have internal predecessors, (1194), 185 states have call successors, (185), 19 states have call predecessors, (185), 22 states have return successors, (214), 182 states have call predecessors, (214), 182 states have call successors, (214) [2023-12-21 09:48:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1593 transitions. [2023-12-21 09:48:04,567 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1593 transitions. Word has length 115 [2023-12-21 09:48:04,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:04,567 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1593 transitions. [2023-12-21 09:48:04,567 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1593 transitions. [2023-12-21 09:48:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 09:48:04,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:04,571 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, 1, 1, 1] [2023-12-21 09:48:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:48:04,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:04,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 533967603, now seen corresponding path program 1 times [2023-12-21 09:48:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753615515] [2023-12-21 09:48:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:48:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:48:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:48:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:48:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:48:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:48:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:48:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:04,661 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 09:48:04,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753615515] [2023-12-21 09:48:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753615515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298044665] [2023-12-21 09:48:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:04,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:04,663 INFO L87 Difference]: Start difference. First operand 940 states and 1593 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:05,489 INFO L93 Difference]: Finished difference Result 2321 states and 3996 transitions. [2023-12-21 09:48:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:05,489 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-12-21 09:48:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:05,495 INFO L225 Difference]: With dead ends: 2321 [2023-12-21 09:48:05,496 INFO L226 Difference]: Without dead ends: 1499 [2023-12-21 09:48:05,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:05,498 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 967 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:05,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 709 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:48:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-12-21 09:48:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1415. [2023-12-21 09:48:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1112 states have (on average 1.6348920863309353) internal successors, (1818), 1118 states have internal predecessors, (1818), 280 states have call successors, (280), 19 states have call predecessors, (280), 22 states have return successors, (309), 277 states have call predecessors, (309), 277 states have call successors, (309) [2023-12-21 09:48:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2407 transitions. [2023-12-21 09:48:05,545 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2407 transitions. Word has length 116 [2023-12-21 09:48:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:05,545 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 2407 transitions. [2023-12-21 09:48:05,545 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2407 transitions. [2023-12-21 09:48:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 09:48:05,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:05,551 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, 1, 1, 1, 1] [2023-12-21 09:48:05,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:48:05,551 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:05,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1111650778, now seen corresponding path program 1 times [2023-12-21 09:48:05,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:05,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925101710] [2023-12-21 09:48:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:48:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:48:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:48:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:48:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:48:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:48:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:48:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:05,618 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 09:48:05,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925101710] [2023-12-21 09:48:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925101710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:05,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:05,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086214760] [2023-12-21 09:48:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:05,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:05,620 INFO L87 Difference]: Start difference. First operand 1415 states and 2407 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:06,464 INFO L93 Difference]: Finished difference Result 3383 states and 5874 transitions. [2023-12-21 09:48:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:06,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-12-21 09:48:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:06,475 INFO L225 Difference]: With dead ends: 3383 [2023-12-21 09:48:06,475 INFO L226 Difference]: Without dead ends: 2214 [2023-12-21 09:48:06,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:06,480 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 964 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:06,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 702 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:48:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2023-12-21 09:48:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2130. [2023-12-21 09:48:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1704 states have (on average 1.6384976525821595) internal successors, (2792), 1710 states have internal predecessors, (2792), 403 states have call successors, (403), 19 states have call predecessors, (403), 22 states have return successors, (448), 400 states have call predecessors, (448), 400 states have call successors, (448) [2023-12-21 09:48:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3643 transitions. [2023-12-21 09:48:06,555 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3643 transitions. Word has length 117 [2023-12-21 09:48:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:06,555 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 3643 transitions. [2023-12-21 09:48:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3643 transitions. [2023-12-21 09:48:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 09:48:06,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:06,562 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, 1, 1, 1, 1, 1] [2023-12-21 09:48:06,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:48:06,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:06,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1282259828, now seen corresponding path program 1 times [2023-12-21 09:48:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:06,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537465011] [2023-12-21 09:48:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:48:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:48:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:48:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:48:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:48:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:48:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:48:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:06,637 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 09:48:06,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:06,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537465011] [2023-12-21 09:48:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537465011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420545295] [2023-12-21 09:48:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:06,638 INFO L87 Difference]: Start difference. First operand 2130 states and 3643 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:07,495 INFO L93 Difference]: Finished difference Result 5025 states and 8787 transitions. [2023-12-21 09:48:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-21 09:48:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:07,510 INFO L225 Difference]: With dead ends: 5025 [2023-12-21 09:48:07,511 INFO L226 Difference]: Without dead ends: 3350 [2023-12-21 09:48:07,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:07,518 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 962 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:07,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 702 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:48:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2023-12-21 09:48:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3266. [2023-12-21 09:48:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2661 states have (on average 1.6407365652010522) internal successors, (4366), 2667 states have internal predecessors, (4366), 582 states have call successors, (582), 19 states have call predecessors, (582), 22 states have return successors, (653), 579 states have call predecessors, (653), 579 states have call successors, (653) [2023-12-21 09:48:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5601 transitions. [2023-12-21 09:48:07,682 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5601 transitions. Word has length 118 [2023-12-21 09:48:07,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:07,682 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5601 transitions. [2023-12-21 09:48:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5601 transitions. [2023-12-21 09:48:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 09:48:07,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:07,691 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:48:07,691 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:07,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash 125167106, now seen corresponding path program 1 times [2023-12-21 09:48:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:07,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127032303] [2023-12-21 09:48:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:48:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:48:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:48:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:48:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:48:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:48:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:48:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:07,768 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 09:48:07,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127032303] [2023-12-21 09:48:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127032303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:07,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397293557] [2023-12-21 09:48:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:07,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:07,770 INFO L87 Difference]: Start difference. First operand 3266 states and 5601 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:08,615 INFO L93 Difference]: Finished difference Result 7980 states and 13985 transitions. [2023-12-21 09:48:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-12-21 09:48:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:08,639 INFO L225 Difference]: With dead ends: 7980 [2023-12-21 09:48:08,640 INFO L226 Difference]: Without dead ends: 5408 [2023-12-21 09:48:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:08,653 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 960 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:08,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 733 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:48:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2023-12-21 09:48:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5324. [2023-12-21 09:48:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5324 states, 4343 states have (on average 1.6322818328344462) internal successors, (7089), 4349 states have internal predecessors, (7089), 958 states have call successors, (958), 19 states have call predecessors, (958), 22 states have return successors, (1073), 955 states have call predecessors, (1073), 955 states have call successors, (1073) [2023-12-21 09:48:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 9120 transitions. [2023-12-21 09:48:08,912 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 9120 transitions. Word has length 119 [2023-12-21 09:48:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:08,913 INFO L495 AbstractCegarLoop]: Abstraction has 5324 states and 9120 transitions. [2023-12-21 09:48:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 9120 transitions. [2023-12-21 09:48:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 09:48:08,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:08,927 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:08,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:48:08,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:08,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2015089768, now seen corresponding path program 1 times [2023-12-21 09:48:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058410815] [2023-12-21 09:48:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:48:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:48:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:48:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:48:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:48:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:48:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:48:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:08,999 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 09:48:08,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:08,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058410815] [2023-12-21 09:48:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058410815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094285613] [2023-12-21 09:48:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:09,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:09,001 INFO L87 Difference]: Start difference. First operand 5324 states and 9120 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:10,235 INFO L93 Difference]: Finished difference Result 13185 states and 23069 transitions. [2023-12-21 09:48:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-12-21 09:48:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:10,275 INFO L225 Difference]: With dead ends: 13185 [2023-12-21 09:48:10,275 INFO L226 Difference]: Without dead ends: 8941 [2023-12-21 09:48:10,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:10,289 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 959 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:10,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 716 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:48:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8941 states. [2023-12-21 09:48:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8941 to 8857. [2023-12-21 09:48:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8857 states, 7270 states have (on average 1.6294360385144429) internal successors, (11846), 7276 states have internal predecessors, (11846), 1564 states have call successors, (1564), 19 states have call predecessors, (1564), 22 states have return successors, (1757), 1561 states have call predecessors, (1757), 1561 states have call successors, (1757) [2023-12-21 09:48:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8857 states to 8857 states and 15167 transitions. [2023-12-21 09:48:10,670 INFO L78 Accepts]: Start accepts. Automaton has 8857 states and 15167 transitions. Word has length 120 [2023-12-21 09:48:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:10,670 INFO L495 AbstractCegarLoop]: Abstraction has 8857 states and 15167 transitions. [2023-12-21 09:48:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8857 states and 15167 transitions. [2023-12-21 09:48:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 09:48:10,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:10,689 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:48:10,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:10,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash -193460572, now seen corresponding path program 1 times [2023-12-21 09:48:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:10,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332477552] [2023-12-21 09:48:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:10,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:48:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:48:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:48:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:48:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:48:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:48:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:48:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:10,757 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 09:48:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332477552] [2023-12-21 09:48:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332477552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:10,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633383465] [2023-12-21 09:48:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:10,759 INFO L87 Difference]: Start difference. First operand 8857 states and 15167 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:12,105 INFO L93 Difference]: Finished difference Result 22957 states and 40098 transitions. [2023-12-21 09:48:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-12-21 09:48:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:12,153 INFO L225 Difference]: With dead ends: 22957 [2023-12-21 09:48:12,153 INFO L226 Difference]: Without dead ends: 15613 [2023-12-21 09:48:12,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:12,176 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 957 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:12,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 755 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:48:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15613 states. [2023-12-21 09:48:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15613 to 15529. [2023-12-21 09:48:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15529 states, 12739 states have (on average 1.6198288719679723) internal successors, (20635), 12745 states have internal predecessors, (20635), 2767 states have call successors, (2767), 19 states have call predecessors, (2767), 22 states have return successors, (3104), 2764 states have call predecessors, (3104), 2764 states have call successors, (3104) [2023-12-21 09:48:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15529 states to 15529 states and 26506 transitions. [2023-12-21 09:48:12,713 INFO L78 Accepts]: Start accepts. Automaton has 15529 states and 26506 transitions. Word has length 121 [2023-12-21 09:48:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:12,713 INFO L495 AbstractCegarLoop]: Abstraction has 15529 states and 26506 transitions. [2023-12-21 09:48:12,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 15529 states and 26506 transitions. [2023-12-21 09:48:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 09:48:12,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:12,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:48:12,740 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:12,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1876846521, now seen corresponding path program 1 times [2023-12-21 09:48:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235305216] [2023-12-21 09:48:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:48:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:48:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:48:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:48:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:48:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:48:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:48:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:12,816 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 09:48:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:12,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235305216] [2023-12-21 09:48:12,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235305216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:12,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:12,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:12,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807588975] [2023-12-21 09:48:12,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:12,818 INFO L87 Difference]: Start difference. First operand 15529 states and 26506 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:14,092 INFO L93 Difference]: Finished difference Result 41124 states and 71696 transitions. [2023-12-21 09:48:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-21 09:48:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:14,183 INFO L225 Difference]: With dead ends: 41124 [2023-12-21 09:48:14,183 INFO L226 Difference]: Without dead ends: 27728 [2023-12-21 09:48:14,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:48:14,217 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 954 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:14,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 703 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:48:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27728 states. [2023-12-21 09:48:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27728 to 27644. [2023-12-21 09:48:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27644 states, 22815 states have (on average 1.6156914310760464) internal successors, (36862), 22821 states have internal predecessors, (36862), 4806 states have call successors, (4806), 19 states have call predecessors, (4806), 22 states have return successors, (5417), 4803 states have call predecessors, (5417), 4803 states have call successors, (5417) [2023-12-21 09:48:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27644 states to 27644 states and 47085 transitions. [2023-12-21 09:48:15,335 INFO L78 Accepts]: Start accepts. Automaton has 27644 states and 47085 transitions. Word has length 122 [2023-12-21 09:48:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:15,336 INFO L495 AbstractCegarLoop]: Abstraction has 27644 states and 47085 transitions. [2023-12-21 09:48:15,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 27644 states and 47085 transitions. [2023-12-21 09:48:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 09:48:15,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:15,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:48:15,358 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:15,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 174303142, now seen corresponding path program 1 times [2023-12-21 09:48:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075583615] [2023-12-21 09:48:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:48:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:48:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:48:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:48:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:48:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:48:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:48:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:15,424 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 09:48:15,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:15,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075583615] [2023-12-21 09:48:15,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075583615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:15,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:15,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563123287] [2023-12-21 09:48:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:15,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:15,425 INFO L87 Difference]: Start difference. First operand 27644 states and 47085 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:17,616 INFO L93 Difference]: Finished difference Result 75316 states and 130490 transitions. [2023-12-21 09:48:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-12-21 09:48:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:17,783 INFO L225 Difference]: With dead ends: 75316 [2023-12-21 09:48:17,784 INFO L226 Difference]: Without dead ends: 50552 [2023-12-21 09:48:17,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:17,966 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 952 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:17,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 715 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:48:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50552 states. [2023-12-21 09:48:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50552 to 50468. [2023-12-21 09:48:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50468 states, 41924 states have (on average 1.6102948191966415) internal successors, (67510), 41930 states have internal predecessors, (67510), 8521 states have call successors, (8521), 19 states have call predecessors, (8521), 22 states have return successors, (9664), 8518 states have call predecessors, (9664), 8518 states have call successors, (9664) [2023-12-21 09:48:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50468 states to 50468 states and 85695 transitions. [2023-12-21 09:48:19,720 INFO L78 Accepts]: Start accepts. Automaton has 50468 states and 85695 transitions. Word has length 123 [2023-12-21 09:48:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:19,720 INFO L495 AbstractCegarLoop]: Abstraction has 50468 states and 85695 transitions. [2023-12-21 09:48:19,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 50468 states and 85695 transitions. [2023-12-21 09:48:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 09:48:19,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:19,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:19,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:48:19,748 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:19,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash 18338745, now seen corresponding path program 1 times [2023-12-21 09:48:19,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:19,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649436730] [2023-12-21 09:48:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:48:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:48:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:48:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:48:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:48:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:48:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:48:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:19,820 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 09:48:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649436730] [2023-12-21 09:48:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649436730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:48:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185847449] [2023-12-21 09:48:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:48:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:48:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:48:19,822 INFO L87 Difference]: Start difference. First operand 50468 states and 85695 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:22,686 INFO L93 Difference]: Finished difference Result 94063 states and 163396 transitions. [2023-12-21 09:48:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:48:22,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-21 09:48:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:22,976 INFO L225 Difference]: With dead ends: 94063 [2023-12-21 09:48:22,976 INFO L226 Difference]: Without dead ends: 93932 [2023-12-21 09:48:23,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 09:48:23,010 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 950 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:23,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 705 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:48:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93932 states. [2023-12-21 09:48:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93932 to 93848. [2023-12-21 09:48:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93848 states, 78505 states have (on average 1.6034392713839882) internal successors, (125878), 78511 states have internal predecessors, (125878), 15320 states have call successors, (15320), 19 states have call predecessors, (15320), 22 states have return successors, (17509), 15317 states have call predecessors, (17509), 15317 states have call successors, (17509) [2023-12-21 09:48:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93848 states to 93848 states and 158707 transitions. [2023-12-21 09:48:26,121 INFO L78 Accepts]: Start accepts. Automaton has 93848 states and 158707 transitions. Word has length 124 [2023-12-21 09:48:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:26,122 INFO L495 AbstractCegarLoop]: Abstraction has 93848 states and 158707 transitions. [2023-12-21 09:48:26,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:48:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 93848 states and 158707 transitions. [2023-12-21 09:48:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 09:48:26,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:26,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:26,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:48:26,155 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:26,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash -247186683, now seen corresponding path program 1 times [2023-12-21 09:48:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623221017] [2023-12-21 09:48:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:48:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:48:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:48:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:48:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:48:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:48:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:48:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:26,305 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 09:48:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623221017] [2023-12-21 09:48:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623221017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 09:48:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536085945] [2023-12-21 09:48:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:26,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 09:48:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 09:48:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:48:26,309 INFO L87 Difference]: Start difference. First operand 93848 states and 158707 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:48:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:30,656 INFO L93 Difference]: Finished difference Result 94445 states and 162876 transitions. [2023-12-21 09:48:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 09:48:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2023-12-21 09:48:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:30,992 INFO L225 Difference]: With dead ends: 94445 [2023-12-21 09:48:30,993 INFO L226 Difference]: Without dead ends: 94319 [2023-12-21 09:48:31,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 09:48:31,034 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1575 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:31,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 955 Invalid, 3823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:48:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94319 states. [2023-12-21 09:48:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94319 to 94104. [2023-12-21 09:48:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94104 states, 78705 states have (on average 1.603176418270758) internal successors, (126178), 78714 states have internal predecessors, (126178), 15350 states have call successors, (15350), 41 states have call predecessors, (15350), 48 states have return successors, (17544), 15348 states have call predecessors, (17544), 15345 states have call successors, (17544) [2023-12-21 09:48:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94104 states to 94104 states and 159072 transitions. [2023-12-21 09:48:34,184 INFO L78 Accepts]: Start accepts. Automaton has 94104 states and 159072 transitions. Word has length 125 [2023-12-21 09:48:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:34,184 INFO L495 AbstractCegarLoop]: Abstraction has 94104 states and 159072 transitions. [2023-12-21 09:48:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:48:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 94104 states and 159072 transitions. [2023-12-21 09:48:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 09:48:34,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:34,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 09:48:34,220 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:34,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1083710545, now seen corresponding path program 1 times [2023-12-21 09:48:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:34,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459836508] [2023-12-21 09:48:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:48:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:48:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:48:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:48:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:48:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:48:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:48:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:34,433 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 09:48:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459836508] [2023-12-21 09:48:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459836508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:48:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 09:48:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659299213] [2023-12-21 09:48:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 09:48:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 09:48:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:48:34,434 INFO L87 Difference]: Start difference. First operand 94104 states and 159072 transitions. Second operand has 14 states, 12 states have (on average 7.0) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 09:48:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:38,880 INFO L93 Difference]: Finished difference Result 94798 states and 163392 transitions. [2023-12-21 09:48:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 09:48:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 126 [2023-12-21 09:48:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:39,184 INFO L225 Difference]: With dead ends: 94798 [2023-12-21 09:48:39,184 INFO L226 Difference]: Without dead ends: 94271 [2023-12-21 09:48:39,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 09:48:39,219 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1371 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 4329 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 4808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 4329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:39,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1608 Invalid, 4808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 4329 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 09:48:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94271 states. [2023-12-21 09:48:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94271 to 94088. [2023-12-21 09:48:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94088 states, 78694 states have (on average 1.6031590718479172) internal successors, (126159), 78703 states have internal predecessors, (126159), 15348 states have call successors, (15348), 40 states have call predecessors, (15348), 45 states have return successors, (17541), 15344 states have call predecessors, (17541), 15344 states have call successors, (17541) [2023-12-21 09:48:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94088 states to 94088 states and 159048 transitions. [2023-12-21 09:48:42,501 INFO L78 Accepts]: Start accepts. Automaton has 94088 states and 159048 transitions. Word has length 126 [2023-12-21 09:48:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:42,501 INFO L495 AbstractCegarLoop]: Abstraction has 94088 states and 159048 transitions. [2023-12-21 09:48:42,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 09:48:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 94088 states and 159048 transitions. [2023-12-21 09:48:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 09:48:42,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:42,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 09:48:42,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:42,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash 208598139, now seen corresponding path program 1 times [2023-12-21 09:48:42,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:42,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645206348] [2023-12-21 09:48:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:42,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:48:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:48:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:48:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:48:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:48:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:48:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:48:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 09:48:43,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645206348] [2023-12-21 09:48:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645206348] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:48:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342530968] [2023-12-21 09:48:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:43,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:48:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:48:43,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:48:43,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 09:48:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:43,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 09:48:43,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:48:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:48:43,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:48:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342530968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:48:43,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:48:43,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2023-12-21 09:48:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907278036] [2023-12-21 09:48:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:48:43,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 09:48:43,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 09:48:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2023-12-21 09:48:43,684 INFO L87 Difference]: Start difference. First operand 94088 states and 159048 transitions. Second operand has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 09:48:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:45,967 INFO L93 Difference]: Finished difference Result 94681 states and 159882 transitions. [2023-12-21 09:48:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 09:48:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 129 [2023-12-21 09:48:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:46,383 INFO L225 Difference]: With dead ends: 94681 [2023-12-21 09:48:46,383 INFO L226 Difference]: Without dead ends: 94531 [2023-12-21 09:48:46,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 09:48:46,413 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 690 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:46,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 4101 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 09:48:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94531 states. [2023-12-21 09:48:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94531 to 94467. [2023-12-21 09:48:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94467 states, 78985 states have (on average 1.6026840539342913) internal successors, (126588), 79004 states have internal predecessors, (126588), 15397 states have call successors, (15397), 70 states have call predecessors, (15397), 84 states have return successors, (17604), 15392 states have call predecessors, (17604), 15391 states have call successors, (17604) [2023-12-21 09:48:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94467 states to 94467 states and 159589 transitions. [2023-12-21 09:48:49,698 INFO L78 Accepts]: Start accepts. Automaton has 94467 states and 159589 transitions. Word has length 129 [2023-12-21 09:48:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:49,699 INFO L495 AbstractCegarLoop]: Abstraction has 94467 states and 159589 transitions. [2023-12-21 09:48:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 09:48:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 94467 states and 159589 transitions. [2023-12-21 09:48:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 09:48:49,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:48:49,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:48:49,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 09:48:49,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:48:49,949 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:48:49,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:48:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1134068118, now seen corresponding path program 1 times [2023-12-21 09:48:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:48:49,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824697173] [2023-12-21 09:48:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:48:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:48:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:48:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:48:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:48:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:48:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:48:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:48:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:48:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:48:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:48:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:48:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:48:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:48:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 09:48:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:48:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824697173] [2023-12-21 09:48:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824697173] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:48:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931653103] [2023-12-21 09:48:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:48:50,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:48:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:48:50,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:48:50,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 09:48:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:48:50,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 09:48:50,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:48:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 09:48:51,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:48:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 09:48:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931653103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:48:52,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:48:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 53 [2023-12-21 09:48:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204379475] [2023-12-21 09:48:52,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:48:52,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 09:48:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:48:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 09:48:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2585, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 09:48:52,135 INFO L87 Difference]: Start difference. First operand 94467 states and 159589 transitions. Second operand has 53 states, 44 states have (on average 5.795454545454546) internal successors, (255), 46 states have internal predecessors, (255), 16 states have call successors, (46), 13 states have call predecessors, (46), 18 states have return successors, (39), 10 states have call predecessors, (39), 15 states have call successors, (39) [2023-12-21 09:49:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:07,676 INFO L93 Difference]: Finished difference Result 285460 states and 502862 transitions. [2023-12-21 09:49:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-21 09:49:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 5.795454545454546) internal successors, (255), 46 states have internal predecessors, (255), 16 states have call successors, (46), 13 states have call predecessors, (46), 18 states have return successors, (39), 10 states have call predecessors, (39), 15 states have call successors, (39) Word has length 130 [2023-12-21 09:49:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:09,061 INFO L225 Difference]: With dead ends: 285460 [2023-12-21 09:49:09,061 INFO L226 Difference]: Without dead ends: 285174 [2023-12-21 09:49:09,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2201, Invalid=14055, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 09:49:09,164 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 5877 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 17168 mSolverCounterSat, 2026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 19194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2026 IncrementalHoareTripleChecker+Valid, 17168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:09,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5877 Valid, 4343 Invalid, 19194 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2026 Valid, 17168 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-21 09:49:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285174 states. [2023-12-21 09:49:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285174 to 283043. [2023-12-21 09:49:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283043 states, 236661 states have (on average 1.6029890856541635) internal successors, (379365), 236655 states have internal predecessors, (379365), 46052 states have call successors, (46052), 243 states have call predecessors, (46052), 329 states have return successors, (61509), 46144 states have call predecessors, (61509), 46034 states have call successors, (61509) [2023-12-21 09:49:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283043 states to 283043 states and 486926 transitions. [2023-12-21 09:49:22,419 INFO L78 Accepts]: Start accepts. Automaton has 283043 states and 486926 transitions. Word has length 130 [2023-12-21 09:49:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:22,421 INFO L495 AbstractCegarLoop]: Abstraction has 283043 states and 486926 transitions. [2023-12-21 09:49:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 5.795454545454546) internal successors, (255), 46 states have internal predecessors, (255), 16 states have call successors, (46), 13 states have call predecessors, (46), 18 states have return successors, (39), 10 states have call predecessors, (39), 15 states have call successors, (39) [2023-12-21 09:49:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 283043 states and 486926 transitions. [2023-12-21 09:49:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 09:49:22,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:22,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:22,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 09:49:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 09:49:22,773 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:22,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 461520083, now seen corresponding path program 1 times [2023-12-21 09:49:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880000484] [2023-12-21 09:49:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:49:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:49:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:49:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:49:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:49:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:49:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:49:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,094 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 09:49:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880000484] [2023-12-21 09:49:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880000484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:23,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 09:49:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524652508] [2023-12-21 09:49:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 09:49:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 09:49:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:49:23,095 INFO L87 Difference]: Start difference. First operand 283043 states and 486926 transitions. Second operand has 17 states, 16 states have (on average 5.5) internal successors, (88), 11 states have internal predecessors, (88), 6 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 09:49:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:33,929 INFO L93 Difference]: Finished difference Result 285222 states and 500102 transitions. [2023-12-21 09:49:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 09:49:33,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 11 states have internal predecessors, (88), 6 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 130 [2023-12-21 09:49:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:35,162 INFO L225 Difference]: With dead ends: 285222 [2023-12-21 09:49:35,162 INFO L226 Difference]: Without dead ends: 284287 [2023-12-21 09:49:35,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 09:49:35,310 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2046 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 5997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:35,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1781 Invalid, 5997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 09:49:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284287 states.