./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec0_product33.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a2f1102c08ad072b808cfc472937f1cd1560bb61fc22de7fb77e42f10991bfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:05:35,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:05:35,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:05:35,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:05:35,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:05:35,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:05:35,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:05:35,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:05:35,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:05:35,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:05:35,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:05:35,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:05:35,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:05:35,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:05:35,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:05:35,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:05:35,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:05:35,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:05:35,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:05:35,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:05:35,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:05:35,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:05:35,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:05:35,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:05:35,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:05:35,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:05:35,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:05:35,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:05:35,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:05:35,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:05:35,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:05:35,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:05:35,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:05:35,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:05:35,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:05:35,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:05:35,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:05:35,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:05:35,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:05:35,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:05:35,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:05:35,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:05:35,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2f1102c08ad072b808cfc472937f1cd1560bb61fc22de7fb77e42f10991bfd [2024-11-18 14:05:35,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:05:36,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:05:36,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:05:36,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:05:36,017 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:05:36,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product33.cil.c [2024-11-18 14:05:37,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:05:37,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:05:37,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product33.cil.c [2024-11-18 14:05:37,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29206c6e7/8eb0f1260834469baabe707c169956ad/FLAG9aec49363 [2024-11-18 14:05:38,077 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29206c6e7/8eb0f1260834469baabe707c169956ad [2024-11-18 14:05:38,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:05:38,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:05:38,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:05:38,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:05:38,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:05:38,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:05:38" (1/1) ... [2024-11-18 14:05:38,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231db53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:38, skipping insertion in model container [2024-11-18 14:05:38,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:05:38" (1/1) ... [2024-11-18 14:05:38,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:05:38,573 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product33.cil.c[31228,31241] [2024-11-18 14:05:38,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:05:38,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:05:38,796 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-18 14:05:38,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1128] [2024-11-18 14:05:38,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1288] [2024-11-18 14:05:38,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1326] [2024-11-18 14:05:38,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1335] [2024-11-18 14:05:38,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1355] [2024-11-18 14:05:38,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1751] [2024-11-18 14:05:38,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1768] [2024-11-18 14:05:38,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2165] [2024-11-18 14:05:38,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2531] [2024-11-18 14:05:38,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2827] [2024-11-18 14:05:38,856 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product33.cil.c[31228,31241] [2024-11-18 14:05:38,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:05:39,011 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:05:39,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39 WrapperNode [2024-11-18 14:05:39,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:05:39,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:05:39,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:05:39,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:05:39,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,180 INFO L138 Inliner]: procedures = 134, calls = 211, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1070 [2024-11-18 14:05:39,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:05:39,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:05:39,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:05:39,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:05:39,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,251 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]. [2024-11-18 14:05:39,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:05:39,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:05:39,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:05:39,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:05:39,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (1/1) ... [2024-11-18 14:05:39,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:05:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:39,370 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) [2024-11-18 14:05:39,374 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 [2024-11-18 14:05:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:05:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:05:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:05:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:05:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:05:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:05:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:05:39,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:05:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:05:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:05:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-18 14:05:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-18 14:05:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:05:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:05:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:05:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:05:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-18 14:05:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-18 14:05:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:05:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:05:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:05:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:05:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-18 14:05:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-18 14:05:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:05:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:05:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:05:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-18 14:05:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-18 14:05:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:05:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:05:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:05:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:05:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:05:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:05:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:05:39,429 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:05:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-18 14:05:39,430 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-18 14:05:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:05:39,430 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:05:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:05:39,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:05:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:05:39,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:05:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-18 14:05:39,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-18 14:05:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:05:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:05:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:05:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:05:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:05:39,433 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:05:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:05:39,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:05:39,653 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:05:39,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:05:40,623 INFO L? ?]: Removed 497 outVars from TransFormulas that were not future-live. [2024-11-18 14:05:40,623 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:05:40,652 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:05:40,656 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:05:40,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:05:40 BoogieIcfgContainer [2024-11-18 14:05:40,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:05:40,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:05:40,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:05:40,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:05:40,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:05:38" (1/3) ... [2024-11-18 14:05:40,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade1bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:05:40, skipping insertion in model container [2024-11-18 14:05:40,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:05:39" (2/3) ... [2024-11-18 14:05:40,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade1bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:05:40, skipping insertion in model container [2024-11-18 14:05:40,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:05:40" (3/3) ... [2024-11-18 14:05:40,669 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product33.cil.c [2024-11-18 14:05:40,689 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:05:40,690 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:05:40,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:05:40,787 INFO L333 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, 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;@55f5b7df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:05:40,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:05:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 14:05:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 14:05:40,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:40,818 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:40,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:40,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1873468759, now seen corresponding path program 1 times [2024-11-18 14:05:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635398962] [2024-11-18 14:05:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:05:41,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:41,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635398962] [2024-11-18 14:05:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635398962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660738711] [2024-11-18 14:05:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:41,592 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) [2024-11-18 14:05:41,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:05:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:41,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:05:42,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:05:42,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660738711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:42,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:42,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:05:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934471310] [2024-11-18 14:05:42,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:05:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:05:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:42,096 INFO L87 Difference]: Start difference. First operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:42,163 INFO L93 Difference]: Finished difference Result 611 states and 886 transitions. [2024-11-18 14:05:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:05:42,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2024-11-18 14:05:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:42,185 INFO L225 Difference]: With dead ends: 611 [2024-11-18 14:05:42,185 INFO L226 Difference]: Without dead ends: 378 [2024-11-18 14:05:42,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:42,195 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:42,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-18 14:05:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2024-11-18 14:05:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 14:05:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2024-11-18 14:05:42,279 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 149 [2024-11-18 14:05:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:42,280 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2024-11-18 14:05:42,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2024-11-18 14:05:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 14:05:42,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:42,288 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:42,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:05:42,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 14:05:42,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:42,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash 952972900, now seen corresponding path program 1 times [2024-11-18 14:05:42,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:42,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640347050] [2024-11-18 14:05:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:42,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:05:42,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640347050] [2024-11-18 14:05:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640347050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988705946] [2024-11-18 14:05:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:42,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:42,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:42,906 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) [2024-11-18 14:05:42,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:05:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:43,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:05:43,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:05:43,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:43,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988705946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:43,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:05:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512240437] [2024-11-18 14:05:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:43,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:43,313 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:43,362 INFO L93 Difference]: Finished difference Result 601 states and 867 transitions. [2024-11-18 14:05:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 150 [2024-11-18 14:05:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:43,372 INFO L225 Difference]: With dead ends: 601 [2024-11-18 14:05:43,372 INFO L226 Difference]: Without dead ends: 381 [2024-11-18 14:05:43,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:43,375 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:43,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1110 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-18 14:05:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2024-11-18 14:05:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 296 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 14:05:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 560 transitions. [2024-11-18 14:05:43,407 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 560 transitions. Word has length 150 [2024-11-18 14:05:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:43,407 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 560 transitions. [2024-11-18 14:05:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 560 transitions. [2024-11-18 14:05:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:05:43,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:43,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:43,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:05:43,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 14:05:43,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:43,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2076245378, now seen corresponding path program 1 times [2024-11-18 14:05:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118806313] [2024-11-18 14:05:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:05:43,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118806313] [2024-11-18 14:05:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118806313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063968086] [2024-11-18 14:05:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:43,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:43,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:43,925 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) [2024-11-18 14:05:43,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:05:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:44,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:44,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:05:44,350 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063968086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:44,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:05:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704409720] [2024-11-18 14:05:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:44,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:44,355 INFO L87 Difference]: Start difference. First operand 380 states and 560 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:44,400 INFO L93 Difference]: Finished difference Result 795 states and 1187 transitions. [2024-11-18 14:05:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2024-11-18 14:05:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:44,405 INFO L225 Difference]: With dead ends: 795 [2024-11-18 14:05:44,405 INFO L226 Difference]: Without dead ends: 442 [2024-11-18 14:05:44,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:44,409 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 115 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:44,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1084 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-18 14:05:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2024-11-18 14:05:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 336 states have (on average 1.5089285714285714) internal successors, (507), 339 states have internal predecessors, (507), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 14:05:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 652 transitions. [2024-11-18 14:05:44,439 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 652 transitions. Word has length 159 [2024-11-18 14:05:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:44,439 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 652 transitions. [2024-11-18 14:05:44,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 652 transitions. [2024-11-18 14:05:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:05:44,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:44,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:44,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:05:44,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:44,645 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:44,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash -95466447, now seen corresponding path program 1 times [2024-11-18 14:05:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038653231] [2024-11-18 14:05:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:05:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038653231] [2024-11-18 14:05:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038653231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418622189] [2024-11-18 14:05:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:44,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:44,890 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) [2024-11-18 14:05:44,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:05:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:45,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:05:45,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:05:45,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418622189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:45,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:05:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869175504] [2024-11-18 14:05:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:45,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:45,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:45,310 INFO L87 Difference]: Start difference. First operand 434 states and 652 transitions. Second operand has 5 states, 4 states have (on average 24.25) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:45,381 INFO L93 Difference]: Finished difference Result 859 states and 1294 transitions. [2024-11-18 14:05:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.25) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-11-18 14:05:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:45,386 INFO L225 Difference]: With dead ends: 859 [2024-11-18 14:05:45,388 INFO L226 Difference]: Without dead ends: 436 [2024-11-18 14:05:45,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:45,391 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 2 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:45,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2189 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-18 14:05:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2024-11-18 14:05:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 337 states have (on average 1.5074183976261128) internal successors, (508), 341 states have internal predecessors, (508), 73 states have call successors, (73), 24 states have call predecessors, (73), 25 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2024-11-18 14:05:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 655 transitions. [2024-11-18 14:05:45,467 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 655 transitions. Word has length 160 [2024-11-18 14:05:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:45,468 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 655 transitions. [2024-11-18 14:05:45,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.25) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 655 transitions. [2024-11-18 14:05:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:05:45,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:45,472 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:45,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:45,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:45,673 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:45,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1319010768, now seen corresponding path program 1 times [2024-11-18 14:05:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:45,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066232689] [2024-11-18 14:05:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:05:45,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066232689] [2024-11-18 14:05:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066232689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019383575] [2024-11-18 14:05:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:45,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:45,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:45,912 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) [2024-11-18 14:05:45,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:05:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:46,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:05:46,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:05:46,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:46,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019383575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:46,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:46,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:05:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807757593] [2024-11-18 14:05:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:46,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:46,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:05:46,388 INFO L87 Difference]: Start difference. First operand 436 states and 655 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:46,463 INFO L93 Difference]: Finished difference Result 861 states and 1299 transitions. [2024-11-18 14:05:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2024-11-18 14:05:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:46,467 INFO L225 Difference]: With dead ends: 861 [2024-11-18 14:05:46,467 INFO L226 Difference]: Without dead ends: 438 [2024-11-18 14:05:46,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:05:46,470 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 2 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:46,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-18 14:05:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2024-11-18 14:05:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2024-11-18 14:05:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 661 transitions. [2024-11-18 14:05:46,500 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 661 transitions. Word has length 161 [2024-11-18 14:05:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:46,500 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 661 transitions. [2024-11-18 14:05:46,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 661 transitions. [2024-11-18 14:05:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 14:05:46,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:46,506 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:46,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:05:46,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:46,707 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:46,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash -569198182, now seen corresponding path program 1 times [2024-11-18 14:05:46,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:46,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093990080] [2024-11-18 14:05:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:05:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093990080] [2024-11-18 14:05:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093990080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:46,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:46,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:05:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837987825] [2024-11-18 14:05:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:46,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:46,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:46,901 INFO L87 Difference]: Start difference. First operand 438 states and 661 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:46,951 INFO L93 Difference]: Finished difference Result 853 states and 1290 transitions. [2024-11-18 14:05:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 162 [2024-11-18 14:05:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:46,955 INFO L225 Difference]: With dead ends: 853 [2024-11-18 14:05:46,956 INFO L226 Difference]: Without dead ends: 438 [2024-11-18 14:05:46,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:46,958 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 2 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:46,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2193 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-18 14:05:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2024-11-18 14:05:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2024-11-18 14:05:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 660 transitions. [2024-11-18 14:05:46,976 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 660 transitions. Word has length 162 [2024-11-18 14:05:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:46,977 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 660 transitions. [2024-11-18 14:05:46,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 660 transitions. [2024-11-18 14:05:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 14:05:46,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:46,980 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:46,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:05:46,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:46,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1671511141, now seen corresponding path program 2 times [2024-11-18 14:05:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686383224] [2024-11-18 14:05:46,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:05:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:47,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:05:47,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:05:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 14:05:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686383224] [2024-11-18 14:05:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686383224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:47,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:47,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:05:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662500045] [2024-11-18 14:05:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:47,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:05:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:05:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:47,164 INFO L87 Difference]: Start difference. First operand 438 states and 660 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:47,699 INFO L93 Difference]: Finished difference Result 1026 states and 1554 transitions. [2024-11-18 14:05:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:05:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2024-11-18 14:05:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:47,708 INFO L225 Difference]: With dead ends: 1026 [2024-11-18 14:05:47,708 INFO L226 Difference]: Without dead ends: 812 [2024-11-18 14:05:47,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:05:47,711 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 1173 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:47,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 3051 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:05:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-11-18 14:05:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 728. [2024-11-18 14:05:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 569 states have (on average 1.5430579964850615) internal successors, (878), 575 states have internal predecessors, (878), 116 states have call successors, (116), 41 states have call predecessors, (116), 42 states have return successors, (131), 114 states have call predecessors, (131), 115 states have call successors, (131) [2024-11-18 14:05:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1125 transitions. [2024-11-18 14:05:47,759 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1125 transitions. Word has length 163 [2024-11-18 14:05:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:47,761 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1125 transitions. [2024-11-18 14:05:47,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1125 transitions. [2024-11-18 14:05:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 14:05:47,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:47,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:47,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:05:47,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:47,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash -951462379, now seen corresponding path program 1 times [2024-11-18 14:05:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277477568] [2024-11-18 14:05:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:47,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:05:47,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277477568] [2024-11-18 14:05:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277477568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:47,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:47,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:05:47,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920308166] [2024-11-18 14:05:47,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:47,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:47,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:47,936 INFO L87 Difference]: Start difference. First operand 728 states and 1125 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:47,998 INFO L93 Difference]: Finished difference Result 1425 states and 2210 transitions. [2024-11-18 14:05:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2024-11-18 14:05:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:48,005 INFO L225 Difference]: With dead ends: 1425 [2024-11-18 14:05:48,005 INFO L226 Difference]: Without dead ends: 732 [2024-11-18 14:05:48,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:05:48,010 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:48,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2196 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-18 14:05:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2024-11-18 14:05:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 571 states have (on average 1.541155866900175) internal successors, (880), 579 states have internal predecessors, (880), 116 states have call successors, (116), 41 states have call predecessors, (116), 44 states have return successors, (134), 114 states have call predecessors, (134), 115 states have call successors, (134) [2024-11-18 14:05:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1130 transitions. [2024-11-18 14:05:48,044 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1130 transitions. Word has length 164 [2024-11-18 14:05:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:48,045 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1130 transitions. [2024-11-18 14:05:48,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1130 transitions. [2024-11-18 14:05:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 14:05:48,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:48,050 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:48,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:05:48,050 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:48,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -245705733, now seen corresponding path program 1 times [2024-11-18 14:05:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315141888] [2024-11-18 14:05:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315141888] [2024-11-18 14:05:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315141888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969632310] [2024-11-18 14:05:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:48,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:48,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:48,225 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) [2024-11-18 14:05:48,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:05:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:48,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:05:48,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:05:48,607 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969632310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:48,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:05:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514368415] [2024-11-18 14:05:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:48,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:48,609 INFO L87 Difference]: Start difference. First operand 732 states and 1130 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:48,680 INFO L93 Difference]: Finished difference Result 1445 states and 2238 transitions. [2024-11-18 14:05:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2024-11-18 14:05:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:48,686 INFO L225 Difference]: With dead ends: 1445 [2024-11-18 14:05:48,686 INFO L226 Difference]: Without dead ends: 738 [2024-11-18 14:05:48,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:48,691 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:48,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2190 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-18 14:05:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 734. [2024-11-18 14:05:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 572 states have (on average 1.5402097902097902) internal successors, (881), 581 states have internal predecessors, (881), 116 states have call successors, (116), 41 states have call predecessors, (116), 45 states have return successors, (137), 114 states have call predecessors, (137), 115 states have call successors, (137) [2024-11-18 14:05:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1134 transitions. [2024-11-18 14:05:48,726 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1134 transitions. Word has length 167 [2024-11-18 14:05:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:48,726 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1134 transitions. [2024-11-18 14:05:48,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1134 transitions. [2024-11-18 14:05:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:05:48,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:48,731 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:48,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:48,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:48,931 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:48,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1500489619, now seen corresponding path program 1 times [2024-11-18 14:05:48,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:48,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827486078] [2024-11-18 14:05:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 14:05:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827486078] [2024-11-18 14:05:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827486078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206791916] [2024-11-18 14:05:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:49,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:49,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:49,108 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) [2024-11-18 14:05:49,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:05:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:49,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:49,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 14:05:49,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206791916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:05:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873764391] [2024-11-18 14:05:49,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:49,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:49,488 INFO L87 Difference]: Start difference. First operand 734 states and 1134 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:05:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:49,523 INFO L93 Difference]: Finished difference Result 1673 states and 2646 transitions. [2024-11-18 14:05:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2024-11-18 14:05:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:49,531 INFO L225 Difference]: With dead ends: 1673 [2024-11-18 14:05:49,531 INFO L226 Difference]: Without dead ends: 990 [2024-11-18 14:05:49,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:49,536 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 113 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:49,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-18 14:05:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 980. [2024-11-18 14:05:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 768 states have (on average 1.5690104166666667) internal successors, (1205), 777 states have internal predecessors, (1205), 166 states have call successors, (166), 41 states have call predecessors, (166), 45 states have return successors, (195), 164 states have call predecessors, (195), 165 states have call successors, (195) [2024-11-18 14:05:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1566 transitions. [2024-11-18 14:05:49,613 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1566 transitions. Word has length 169 [2024-11-18 14:05:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1566 transitions. [2024-11-18 14:05:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:05:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1566 transitions. [2024-11-18 14:05:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 14:05:49,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:49,620 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:49,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:49,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:49,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:49,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1606255940, now seen corresponding path program 1 times [2024-11-18 14:05:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89140740] [2024-11-18 14:05:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89140740] [2024-11-18 14:05:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89140740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968362206] [2024-11-18 14:05:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:49,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:49,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:49,976 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) [2024-11-18 14:05:49,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:05:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:50,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:05:50,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:50,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968362206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:50,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:05:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143542583] [2024-11-18 14:05:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:50,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:05:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:05:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:50,392 INFO L87 Difference]: Start difference. First operand 980 states and 1566 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:50,467 INFO L93 Difference]: Finished difference Result 1923 states and 3087 transitions. [2024-11-18 14:05:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:05:50,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 168 [2024-11-18 14:05:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:50,476 INFO L225 Difference]: With dead ends: 1923 [2024-11-18 14:05:50,476 INFO L226 Difference]: Without dead ends: 986 [2024-11-18 14:05:50,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:05:50,482 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 1 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:50,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-18 14:05:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-18 14:05:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 770 states have (on average 1.5675324675324676) internal successors, (1207), 781 states have internal predecessors, (1207), 166 states have call successors, (166), 41 states have call predecessors, (166), 47 states have return successors, (201), 164 states have call predecessors, (201), 165 states have call successors, (201) [2024-11-18 14:05:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1574 transitions. [2024-11-18 14:05:50,532 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1574 transitions. Word has length 168 [2024-11-18 14:05:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:50,533 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1574 transitions. [2024-11-18 14:05:50,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:05:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1574 transitions. [2024-11-18 14:05:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:05:50,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:50,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:50,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:50,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 14:05:50,742 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:50,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash 439837863, now seen corresponding path program 1 times [2024-11-18 14:05:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16188910] [2024-11-18 14:05:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:50,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:50,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16188910] [2024-11-18 14:05:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16188910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906277455] [2024-11-18 14:05:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:50,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:50,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:50,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:05:50,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:05:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:51,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:51,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 14:05:51,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:05:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 14:05:51,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906277455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:05:51,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:05:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-18 14:05:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95036982] [2024-11-18 14:05:51,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:05:51,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:05:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:05:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:51,433 INFO L87 Difference]: Start difference. First operand 984 states and 1574 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-18 14:05:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:51,678 INFO L93 Difference]: Finished difference Result 2509 states and 4099 transitions. [2024-11-18 14:05:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:05:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 169 [2024-11-18 14:05:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:51,692 INFO L225 Difference]: With dead ends: 2509 [2024-11-18 14:05:51,692 INFO L226 Difference]: Without dead ends: 1866 [2024-11-18 14:05:51,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:05:51,697 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 601 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:51,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 3709 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:05:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2024-11-18 14:05:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1830. [2024-11-18 14:05:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1468 states have (on average 1.6001362397820162) internal successors, (2349), 1464 states have internal predecessors, (2349), 318 states have call successors, (318), 41 states have call predecessors, (318), 43 states have return successors, (380), 327 states have call predecessors, (380), 317 states have call successors, (380) [2024-11-18 14:05:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 3047 transitions. [2024-11-18 14:05:51,781 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 3047 transitions. Word has length 169 [2024-11-18 14:05:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:51,781 INFO L471 AbstractCegarLoop]: Abstraction has 1830 states and 3047 transitions. [2024-11-18 14:05:51,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-18 14:05:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 3047 transitions. [2024-11-18 14:05:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 14:05:51,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:51,793 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:51,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:05:51,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:51,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:51,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash -255443393, now seen corresponding path program 1 times [2024-11-18 14:05:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:51,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242656527] [2024-11-18 14:05:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:52,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242656527] [2024-11-18 14:05:52,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242656527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299085578] [2024-11-18 14:05:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:52,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:52,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:05:52,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:05:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:52,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:52,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:05:52,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299085578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:52,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:52,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:05:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869204473] [2024-11-18 14:05:52,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:52,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:52,762 INFO L87 Difference]: Start difference. First operand 1830 states and 3047 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:52,856 INFO L93 Difference]: Finished difference Result 4336 states and 7293 transitions. [2024-11-18 14:05:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:52,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 186 [2024-11-18 14:05:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:52,878 INFO L225 Difference]: With dead ends: 4336 [2024-11-18 14:05:52,878 INFO L226 Difference]: Without dead ends: 2673 [2024-11-18 14:05:52,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:52,889 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 107 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:52,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1105 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2024-11-18 14:05:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2663. [2024-11-18 14:05:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2173 states have (on average 1.6088357109986193) internal successors, (3496), 2160 states have internal predecessors, (3496), 446 states have call successors, (446), 41 states have call predecessors, (446), 43 states have return successors, (545), 464 states have call predecessors, (545), 445 states have call successors, (545) [2024-11-18 14:05:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 4487 transitions. [2024-11-18 14:05:53,034 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 4487 transitions. Word has length 186 [2024-11-18 14:05:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:53,034 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 4487 transitions. [2024-11-18 14:05:53,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 4487 transitions. [2024-11-18 14:05:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-18 14:05:53,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:53,053 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:53,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:05:53,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:05:53,254 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:53,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -130910294, now seen corresponding path program 1 times [2024-11-18 14:05:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054970717] [2024-11-18 14:05:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:53,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:53,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054970717] [2024-11-18 14:05:53,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054970717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:53,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446068723] [2024-11-18 14:05:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:53,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:53,480 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:05:53,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:05:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:53,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:53,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:05:53,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446068723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:05:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367161977] [2024-11-18 14:05:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:53,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:53,910 INFO L87 Difference]: Start difference. First operand 2663 states and 4487 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:54,056 INFO L93 Difference]: Finished difference Result 6352 states and 10793 transitions. [2024-11-18 14:05:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:54,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 187 [2024-11-18 14:05:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:54,084 INFO L225 Difference]: With dead ends: 6352 [2024-11-18 14:05:54,084 INFO L226 Difference]: Without dead ends: 4006 [2024-11-18 14:05:54,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:54,095 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 105 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:54,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1105 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2024-11-18 14:05:54,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3996. [2024-11-18 14:05:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3996 states, 3318 states have (on average 1.6151295961422543) internal successors, (5359), 3293 states have internal predecessors, (5359), 634 states have call successors, (634), 41 states have call predecessors, (634), 43 states have return successors, (794), 664 states have call predecessors, (794), 633 states have call successors, (794) [2024-11-18 14:05:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6787 transitions. [2024-11-18 14:05:54,286 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6787 transitions. Word has length 187 [2024-11-18 14:05:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:54,286 INFO L471 AbstractCegarLoop]: Abstraction has 3996 states and 6787 transitions. [2024-11-18 14:05:54,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6787 transitions. [2024-11-18 14:05:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-18 14:05:54,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:54,307 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:54,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:54,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:05:54,509 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:54,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 173189379, now seen corresponding path program 1 times [2024-11-18 14:05:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:54,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985522376] [2024-11-18 14:05:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985522376] [2024-11-18 14:05:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985522376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648379825] [2024-11-18 14:05:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:54,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:54,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:05:54,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:05:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:55,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:55,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:05:55,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:55,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648379825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:55,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:05:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138715442] [2024-11-18 14:05:55,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:55,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:55,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:55,205 INFO L87 Difference]: Start difference. First operand 3996 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:55,346 INFO L93 Difference]: Finished difference Result 9644 states and 16509 transitions. [2024-11-18 14:05:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:55,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 188 [2024-11-18 14:05:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:55,388 INFO L225 Difference]: With dead ends: 9644 [2024-11-18 14:05:55,389 INFO L226 Difference]: Without dead ends: 6213 [2024-11-18 14:05:55,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:55,406 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 103 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:55,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2024-11-18 14:05:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 6203. [2024-11-18 14:05:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6203 states, 5132 states have (on average 1.6124318004676539) internal successors, (8275), 5092 states have internal predecessors, (8275), 1027 states have call successors, (1027), 41 states have call predecessors, (1027), 43 states have return successors, (1292), 1072 states have call predecessors, (1292), 1026 states have call successors, (1292) [2024-11-18 14:05:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 10594 transitions. [2024-11-18 14:05:55,720 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 10594 transitions. Word has length 188 [2024-11-18 14:05:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:55,721 INFO L471 AbstractCegarLoop]: Abstraction has 6203 states and 10594 transitions. [2024-11-18 14:05:55,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 10594 transitions. [2024-11-18 14:05:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 14:05:55,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:55,756 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:55,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:05:55,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:05:55,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:55,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1361351073, now seen corresponding path program 1 times [2024-11-18 14:05:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098357872] [2024-11-18 14:05:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 14:05:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098357872] [2024-11-18 14:05:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098357872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:05:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778119511] [2024-11-18 14:05:56,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:56,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:05:56,123 INFO L87 Difference]: Start difference. First operand 6203 states and 10594 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:56,336 INFO L93 Difference]: Finished difference Result 16691 states and 28543 transitions. [2024-11-18 14:05:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2024-11-18 14:05:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:56,414 INFO L225 Difference]: With dead ends: 16691 [2024-11-18 14:05:56,414 INFO L226 Difference]: Without dead ends: 10627 [2024-11-18 14:05:56,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:05:56,448 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 111 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:56,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1110 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10627 states. [2024-11-18 14:05:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10627 to 10617. [2024-11-18 14:05:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10617 states, 8838 states have (on average 1.6129214754469337) internal successors, (14255), 8798 states have internal predecessors, (14255), 1735 states have call successors, (1735), 41 states have call predecessors, (1735), 43 states have return successors, (2078), 1780 states have call predecessors, (2078), 1734 states have call successors, (2078) [2024-11-18 14:05:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10617 states to 10617 states and 18068 transitions. [2024-11-18 14:05:57,091 INFO L78 Accepts]: Start accepts. Automaton has 10617 states and 18068 transitions. Word has length 174 [2024-11-18 14:05:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:57,092 INFO L471 AbstractCegarLoop]: Abstraction has 10617 states and 18068 transitions. [2024-11-18 14:05:57,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:05:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10617 states and 18068 transitions. [2024-11-18 14:05:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-18 14:05:57,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:57,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:57,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:05:57,157 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:57,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1034168550, now seen corresponding path program 1 times [2024-11-18 14:05:57,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:57,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579103517] [2024-11-18 14:05:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:57,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:05:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579103517] [2024-11-18 14:05:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579103517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:05:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941332776] [2024-11-18 14:05:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:57,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:05:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:05:57,408 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:05:57,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:05:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:57,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:05:57,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:05:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:05:57,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:05:57,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941332776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:57,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:05:57,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:05:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797490305] [2024-11-18 14:05:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:57,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:57,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:57,905 INFO L87 Difference]: Start difference. First operand 10617 states and 18068 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:58,286 INFO L93 Difference]: Finished difference Result 27392 states and 46832 transitions. [2024-11-18 14:05:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:05:58,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 189 [2024-11-18 14:05:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:58,384 INFO L225 Difference]: With dead ends: 27392 [2024-11-18 14:05:58,385 INFO L226 Difference]: Without dead ends: 18383 [2024-11-18 14:05:58,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:58,559 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 101 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:58,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:05:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18383 states. [2024-11-18 14:05:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18383 to 18373. [2024-11-18 14:05:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18373 states, 15382 states have (on average 1.6114289429202964) internal successors, (24787), 15342 states have internal predecessors, (24787), 2947 states have call successors, (2947), 41 states have call predecessors, (2947), 43 states have return successors, (3479), 2992 states have call predecessors, (3479), 2946 states have call successors, (3479) [2024-11-18 14:05:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18373 states to 18373 states and 31213 transitions. [2024-11-18 14:05:59,488 INFO L78 Accepts]: Start accepts. Automaton has 18373 states and 31213 transitions. Word has length 189 [2024-11-18 14:05:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:59,488 INFO L471 AbstractCegarLoop]: Abstraction has 18373 states and 31213 transitions. [2024-11-18 14:05:59,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:05:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 18373 states and 31213 transitions. [2024-11-18 14:05:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 14:05:59,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:59,569 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:59,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:05:59,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:05:59,775 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:59,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1478121156, now seen corresponding path program 1 times [2024-11-18 14:05:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:59,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491745] [2024-11-18 14:05:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 14:05:59,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:59,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491745] [2024-11-18 14:05:59,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:59,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:59,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:05:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36362740] [2024-11-18 14:05:59,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:59,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:05:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:05:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:05:59,861 INFO L87 Difference]: Start difference. First operand 18373 states and 31213 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:06:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:06:00,963 INFO L93 Difference]: Finished difference Result 48411 states and 82582 transitions. [2024-11-18 14:06:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:06:00,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2024-11-18 14:06:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:06:01,141 INFO L225 Difference]: With dead ends: 48411 [2024-11-18 14:06:01,142 INFO L226 Difference]: Without dead ends: 32578 [2024-11-18 14:06:01,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:06:01,198 INFO L432 NwaCegarLoop]: 576 mSDtfsCounter, 101 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:06:01,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:06:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32578 states. [2024-11-18 14:06:02,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32578 to 32568. [2024-11-18 14:06:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32568 states, 27246 states have (on average 1.6031344050502827) internal successors, (43679), 27188 states have internal predecessors, (43679), 5278 states have call successors, (5278), 41 states have call predecessors, (5278), 43 states have return successors, (6229), 5341 states have call predecessors, (6229), 5277 states have call successors, (6229) [2024-11-18 14:06:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32568 states to 32568 states and 55186 transitions. [2024-11-18 14:06:02,967 INFO L78 Accepts]: Start accepts. Automaton has 32568 states and 55186 transitions. Word has length 176 [2024-11-18 14:06:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:06:02,968 INFO L471 AbstractCegarLoop]: Abstraction has 32568 states and 55186 transitions. [2024-11-18 14:06:02,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:06:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 32568 states and 55186 transitions. [2024-11-18 14:06:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 14:06:03,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:06:03,353 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:06:03,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:06:03,353 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:06:03,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:06:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1790398910, now seen corresponding path program 1 times [2024-11-18 14:06:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:06:03,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092740174] [2024-11-18 14:06:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:06:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 14:06:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:06:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092740174] [2024-11-18 14:06:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092740174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:06:03,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:06:03,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:06:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840741436] [2024-11-18 14:06:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:06:03,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:06:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:06:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:06:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:06:03,439 INFO L87 Difference]: Start difference. First operand 32568 states and 55186 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:06:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:06:05,337 INFO L93 Difference]: Finished difference Result 87882 states and 149558 transitions. [2024-11-18 14:06:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:06:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 177 [2024-11-18 14:06:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:06:05,694 INFO L225 Difference]: With dead ends: 87882 [2024-11-18 14:06:05,694 INFO L226 Difference]: Without dead ends: 58755 [2024-11-18 14:06:05,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:06:05,793 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 99 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:06:05,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1108 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:06:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58755 states. [2024-11-18 14:06:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58755 to 58745. [2024-11-18 14:06:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58745 states, 49427 states have (on average 1.5992271430594613) internal successors, (79045), 49348 states have internal predecessors, (79045), 9274 states have call successors, (9274), 41 states have call predecessors, (9274), 43 states have return successors, (11032), 9358 states have call predecessors, (11032), 9273 states have call successors, (11032) [2024-11-18 14:06:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58745 states to 58745 states and 99351 transitions. [2024-11-18 14:06:08,924 INFO L78 Accepts]: Start accepts. Automaton has 58745 states and 99351 transitions. Word has length 177 [2024-11-18 14:06:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:06:08,925 INFO L471 AbstractCegarLoop]: Abstraction has 58745 states and 99351 transitions. [2024-11-18 14:06:08,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:06:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 58745 states and 99351 transitions. [2024-11-18 14:06:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 14:06:09,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:06:09,092 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:06:09,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:06:09,092 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:06:09,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:06:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash 62164915, now seen corresponding path program 1 times [2024-11-18 14:06:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:06:09,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069715289] [2024-11-18 14:06:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:09,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:06:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:06:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:06:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069715289] [2024-11-18 14:06:09,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069715289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:06:09,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108653444] [2024-11-18 14:06:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:09,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:06:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:06:09,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:06:09,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:06:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:10,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:06:10,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:06:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:06:10,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:06:10,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108653444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:06:10,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:06:10,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:06:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589911417] [2024-11-18 14:06:10,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:06:10,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:06:10,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:06:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:06:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:06:10,128 INFO L87 Difference]: Start difference. First operand 58745 states and 99351 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:06:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:06:12,615 INFO L93 Difference]: Finished difference Result 162729 states and 275580 transitions. [2024-11-18 14:06:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:06:12,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 192 [2024-11-18 14:06:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:06:13,350 INFO L225 Difference]: With dead ends: 162729 [2024-11-18 14:06:13,350 INFO L226 Difference]: Without dead ends: 109087 [2024-11-18 14:06:13,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:06:13,530 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 95 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:06:13,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:06:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109087 states. [2024-11-18 14:06:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109087 to 109077. [2024-11-18 14:06:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109077 states, 92335 states have (on average 1.5935452428656522) internal successors, (147140), 92256 states have internal predecessors, (147140), 16698 states have call successors, (16698), 41 states have call predecessors, (16698), 43 states have return successors, (19520), 16782 states have call predecessors, (19520), 16697 states have call successors, (19520) [2024-11-18 14:06:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109077 states to 109077 states and 183358 transitions. [2024-11-18 14:06:18,678 INFO L78 Accepts]: Start accepts. Automaton has 109077 states and 183358 transitions. Word has length 192 [2024-11-18 14:06:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:06:18,678 INFO L471 AbstractCegarLoop]: Abstraction has 109077 states and 183358 transitions. [2024-11-18 14:06:18,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:06:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 109077 states and 183358 transitions. [2024-11-18 14:06:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 14:06:18,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:06:18,941 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:06:18,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:06:19,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:06:19,143 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:06:19,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:06:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2093592997, now seen corresponding path program 1 times [2024-11-18 14:06:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:06:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316257646] [2024-11-18 14:06:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:06:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:06:19,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:06:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316257646] [2024-11-18 14:06:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316257646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:06:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687073014] [2024-11-18 14:06:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:19,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:06:19,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:06:19,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:06:19,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:06:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:19,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:06:19,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:06:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 14:06:19,837 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:06:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687073014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:06:19,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:06:19,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:06:19,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466670015] [2024-11-18 14:06:19,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:06:19,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:06:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:06:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:06:19,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:06:19,839 INFO L87 Difference]: Start difference. First operand 109077 states and 183358 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:06:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:06:23,893 INFO L93 Difference]: Finished difference Result 204826 states and 344941 transitions. [2024-11-18 14:06:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:06:23,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 193 [2024-11-18 14:06:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:06:24,923 INFO L225 Difference]: With dead ends: 204826 [2024-11-18 14:06:24,923 INFO L226 Difference]: Without dead ends: 204527 [2024-11-18 14:06:25,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:06:25,010 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 90 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:06:25,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:06:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204527 states. [2024-11-18 14:06:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204527 to 204517. [2024-11-18 14:06:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204517 states, 174280 states have (on average 1.5867569428505852) internal successors, (276540), 174177 states have internal predecessors, (276540), 30193 states have call successors, (30193), 41 states have call predecessors, (30193), 43 states have return successors, (35622), 30301 states have call predecessors, (35622), 30192 states have call successors, (35622) [2024-11-18 14:06:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204517 states to 204517 states and 342355 transitions. [2024-11-18 14:06:33,337 INFO L78 Accepts]: Start accepts. Automaton has 204517 states and 342355 transitions. Word has length 193 [2024-11-18 14:06:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:06:33,338 INFO L471 AbstractCegarLoop]: Abstraction has 204517 states and 342355 transitions. [2024-11-18 14:06:33,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:06:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 204517 states and 342355 transitions. [2024-11-18 14:06:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 14:06:33,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:06:33,752 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:06:33,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:06:33,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:06:33,954 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:06:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:06:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1975269076, now seen corresponding path program 1 times [2024-11-18 14:06:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:06:33,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837764512] [2024-11-18 14:06:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:06:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:06:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:06:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837764512] [2024-11-18 14:06:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837764512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:06:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996244006] [2024-11-18 14:06:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:06:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:06:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:06:34,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:06:34,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:06:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:06:34,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:06:34,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:06:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:06:34,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:06:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996244006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:06:34,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:06:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:06:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347324399] [2024-11-18 14:06:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:06:34,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:06:34,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:06:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:06:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:06:34,723 INFO L87 Difference]: Start difference. First operand 204517 states and 342355 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:06:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:06:39,764 INFO L93 Difference]: Finished difference Result 300627 states and 501966 transitions. [2024-11-18 14:06:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:06:39,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 194 [2024-11-18 14:06:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:06:41,089 INFO L225 Difference]: With dead ends: 300627 [2024-11-18 14:06:41,089 INFO L226 Difference]: Without dead ends: 201153 [2024-11-18 14:06:41,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:06:41,278 INFO L432 NwaCegarLoop]: 558 mSDtfsCounter, 511 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:06:41,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1460 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:06:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201153 states.