./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product31.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_spec3_product31.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 beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:10:50,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:10:50,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:10:50,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:10:50,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:10:50,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:10:50,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:10:50,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:10:50,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:10:50,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:10:50,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:10:50,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:10:50,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:10:50,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:10:50,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:10:50,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:10:50,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:10:50,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:10:50,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:10:50,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:10:50,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:10:50,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:10:50,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:10:50,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:10:50,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:10:50,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:10:50,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:10:50,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:10:50,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:10:50,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 [2024-11-18 14:10:50,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:10:50,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:10:50,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:10:50,646 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:10:50,646 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:10:50,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2024-11-18 14:10:51,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:10:52,129 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:10:52,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2024-11-18 14:10:52,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae2776c0/a5e2679d2d584ecaa7f71c1a476b23cb/FLAG35f102bf6 [2024-11-18 14:10:52,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae2776c0/a5e2679d2d584ecaa7f71c1a476b23cb [2024-11-18 14:10:52,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:10:52,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:10:52,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:10:52,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:10:52,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:10:52,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d21832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52, skipping insertion in model container [2024-11-18 14:10:52,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:10:52,644 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_spec3_product31.cil.c[42138,42151] [2024-11-18 14:10:52,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:10:52,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:10:52,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-18 14:10:52,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1128] [2024-11-18 14:10:52,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1435] [2024-11-18 14:10:52,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1801] [2024-11-18 14:10:52,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1836] [2024-11-18 14:10:52,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1845] [2024-11-18 14:10:52,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2061] [2024-11-18 14:10:52,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2436] [2024-11-18 14:10:52,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2494] [2024-11-18 14:10:52,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2893] [2024-11-18 14:10:52,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3028] [2024-11-18 14:10:52,812 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_spec3_product31.cil.c[42138,42151] [2024-11-18 14:10:52,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:10:52,860 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:10:52,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52 WrapperNode [2024-11-18 14:10:52,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:10:52,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:10:52,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:10:52,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:10:52,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,954 INFO L138 Inliner]: procedures = 132, calls = 211, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1061 [2024-11-18 14:10:52,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:10:52,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:10:52,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:10:52,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:10:52,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:52,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,003 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 14:10:53,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:10:53,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:10:53,049 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:10:53,049 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:10:53,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (1/1) ... [2024-11-18 14:10:53,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:10:53,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:53,079 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 14:10:53,082 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 14:10:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:10:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:10:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:10:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:10:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:10:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:10:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:10:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:10:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:10:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:10:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-18 14:10:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-18 14:10:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:10:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:10:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:10:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-18 14:10:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:10:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:10:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:10:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:10:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-18 14:10:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-18 14:10:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:10:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-18 14:10:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:10:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:10:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:10:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-18 14:10:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:10:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:10:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:10:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:10:53,347 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:10:53,349 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:10:54,045 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-11-18 14:10:54,046 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:10:54,067 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:10:54,067 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:10:54,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:54 BoogieIcfgContainer [2024-11-18 14:10:54,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:10:54,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:10:54,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:10:54,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:10:54,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:10:52" (1/3) ... [2024-11-18 14:10:54,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab7aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:54, skipping insertion in model container [2024-11-18 14:10:54,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:52" (2/3) ... [2024-11-18 14:10:54,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab7aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:54, skipping insertion in model container [2024-11-18 14:10:54,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:54" (3/3) ... [2024-11-18 14:10:54,079 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2024-11-18 14:10:54,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:10:54,092 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:10:54,155 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:10:54,162 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;@e09582f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:10:54,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:10:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 14:10:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:10:54,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:54,192 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:10:54,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:54,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1387818797, now seen corresponding path program 1 times [2024-11-18 14:10:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657928161] [2024-11-18 14:10:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:10:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:54,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657928161] [2024-11-18 14:10:54,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657928161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:54,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669980290] [2024-11-18 14:10:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:54,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:54,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:54,814 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 14:10:54,816 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 14:10:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:55,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:10:55,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:10:55,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:10:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669980290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:55,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:10:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:10:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972767557] [2024-11-18 14:10:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:55,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:10:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:10:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:10:55,195 INFO L87 Difference]: Start difference. First operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:55,240 INFO L93 Difference]: Finished difference Result 605 states and 878 transitions. [2024-11-18 14:10:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:10:55,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2024-11-18 14:10:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:55,253 INFO L225 Difference]: With dead ends: 605 [2024-11-18 14:10:55,253 INFO L226 Difference]: Without dead ends: 372 [2024-11-18 14:10:55,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 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 14:10:55,265 INFO L432 NwaCegarLoop]: 556 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, 556 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 14:10:55,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-18 14:10:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-18 14:10:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 284 states have (on average 1.4894366197183098) internal successors, (423), 288 states have internal predecessors, (423), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 14:10:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 548 transitions. [2024-11-18 14:10:55,329 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 548 transitions. Word has length 130 [2024-11-18 14:10:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:55,330 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 548 transitions. [2024-11-18 14:10:55,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 548 transitions. [2024-11-18 14:10:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:10:55,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:55,348 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:10:55,368 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 14:10:55,549 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 14:10:55,549 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:55,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash 440913668, now seen corresponding path program 1 times [2024-11-18 14:10:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:55,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432521093] [2024-11-18 14:10:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:10:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432521093] [2024-11-18 14:10:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432521093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478207690] [2024-11-18 14:10:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:55,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:55,770 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 14:10:55,771 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 14:10:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:56,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:10:56,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:10:56,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:10:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478207690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:56,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:10:56,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:10:56,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583209133] [2024-11-18 14:10:56,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:56,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:10:56,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:10:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:10:56,072 INFO L87 Difference]: Start difference. First operand 372 states and 548 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:56,122 INFO L93 Difference]: Finished difference Result 594 states and 855 transitions. [2024-11-18 14:10:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:10:56,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2024-11-18 14:10:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:56,129 INFO L225 Difference]: With dead ends: 594 [2024-11-18 14:10:56,129 INFO L226 Difference]: Without dead ends: 375 [2024-11-18 14:10:56,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 14:10:56,132 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 1 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1090 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 14:10:56,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1090 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-18 14:10:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 374. [2024-11-18 14:10:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.486013986013986) internal successors, (425), 290 states have internal predecessors, (425), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 14:10:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 550 transitions. [2024-11-18 14:10:56,166 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 550 transitions. Word has length 131 [2024-11-18 14:10:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:56,166 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 550 transitions. [2024-11-18 14:10:56,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 550 transitions. [2024-11-18 14:10:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 14:10:56,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:56,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:56,189 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 14:10:56,369 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 14:10:56,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:56,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2067163547, now seen corresponding path program 1 times [2024-11-18 14:10:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772266096] [2024-11-18 14:10:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:10:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772266096] [2024-11-18 14:10:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772266096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284179143] [2024-11-18 14:10:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:56,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:56,580 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 14:10:56,581 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 14:10:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:56,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:10:56,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:10:56,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:10:56,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284179143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:10:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:10:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613118846] [2024-11-18 14:10:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:56,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:10:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:10:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:10:56,884 INFO L87 Difference]: Start difference. First operand 374 states and 550 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:56,928 INFO L93 Difference]: Finished difference Result 778 states and 1159 transitions. [2024-11-18 14:10:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:10:56,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2024-11-18 14:10:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:56,932 INFO L225 Difference]: With dead ends: 778 [2024-11-18 14:10:56,932 INFO L226 Difference]: Without dead ends: 431 [2024-11-18 14:10:56,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 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 14:10:56,936 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 107 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1056 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 14:10:56,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1056 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-18 14:10:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 423. [2024-11-18 14:10:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5030864197530864) internal successors, (487), 328 states have internal predecessors, (487), 75 states have call successors, (75), 24 states have call predecessors, (75), 23 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 14:10:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 634 transitions. [2024-11-18 14:10:56,965 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 634 transitions. Word has length 137 [2024-11-18 14:10:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:56,965 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 634 transitions. [2024-11-18 14:10:56,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:10:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 634 transitions. [2024-11-18 14:10:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 14:10:56,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:56,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:56,985 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 14:10:57,168 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 14:10:57,169 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:57,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash -607209044, now seen corresponding path program 1 times [2024-11-18 14:10:57,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972082085] [2024-11-18 14:10:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:10:57,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972082085] [2024-11-18 14:10:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972082085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317394828] [2024-11-18 14:10:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:57,318 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 14:10:57,319 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 14:10:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:57,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:10:57,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:10:57,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:10:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317394828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:57,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:10:57,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:10:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904726740] [2024-11-18 14:10:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:57,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:10:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:10:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:10:57,615 INFO L87 Difference]: Start difference. First operand 423 states and 634 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:57,663 INFO L93 Difference]: Finished difference Result 837 states and 1258 transitions. [2024-11-18 14:10:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:10:57,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2024-11-18 14:10:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:57,666 INFO L225 Difference]: With dead ends: 837 [2024-11-18 14:10:57,666 INFO L226 Difference]: Without dead ends: 425 [2024-11-18 14:10:57,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 14:10:57,667 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 2 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2149 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 14:10:57,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2149 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-18 14:10:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2024-11-18 14:10:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.5015384615384615) internal successors, (488), 330 states have internal predecessors, (488), 75 states have call successors, (75), 24 states have call predecessors, (75), 24 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2024-11-18 14:10:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 637 transitions. [2024-11-18 14:10:57,682 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 637 transitions. Word has length 138 [2024-11-18 14:10:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:57,683 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 637 transitions. [2024-11-18 14:10:57,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 637 transitions. [2024-11-18 14:10:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 14:10:57,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:57,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:57,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:10:57,885 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 14:10:57,886 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:57,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1078053634, now seen corresponding path program 1 times [2024-11-18 14:10:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125996138] [2024-11-18 14:10:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:10:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125996138] [2024-11-18 14:10:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125996138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:58,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581133176] [2024-11-18 14:10:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:58,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:58,036 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 14:10:58,037 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 14:10:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:58,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:10:58,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:10:58,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:10:58,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581133176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:58,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:10:58,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:10:58,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11487284] [2024-11-18 14:10:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:58,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:10:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:10:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:10:58,318 INFO L87 Difference]: Start difference. First operand 425 states and 637 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:58,365 INFO L93 Difference]: Finished difference Result 839 states and 1263 transitions. [2024-11-18 14:10:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:10:58,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2024-11-18 14:10:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:58,368 INFO L225 Difference]: With dead ends: 839 [2024-11-18 14:10:58,368 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 14:10:58,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:10:58,370 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 2 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2135 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 14:10:58,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2135 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 14:10:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2024-11-18 14:10:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2024-11-18 14:10:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2024-11-18 14:10:58,383 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 139 [2024-11-18 14:10:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:58,384 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2024-11-18 14:10:58,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2024-11-18 14:10:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 14:10:58,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:58,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:58,403 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 14:10:58,586 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 14:10:58,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:58,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2074934836, now seen corresponding path program 1 times [2024-11-18 14:10:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476470731] [2024-11-18 14:10:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:10:58,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476470731] [2024-11-18 14:10:58,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476470731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:58,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:10:58,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:10:58,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525619313] [2024-11-18 14:10:58,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:58,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:10:58,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:58,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:10:58,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:10:58,721 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:58,760 INFO L93 Difference]: Finished difference Result 831 states and 1254 transitions. [2024-11-18 14:10:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:10:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2024-11-18 14:10:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:58,763 INFO L225 Difference]: With dead ends: 831 [2024-11-18 14:10:58,763 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 14:10:58,765 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 14:10:58,765 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 2 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2153 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 14:10:58,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2153 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 14:10:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2024-11-18 14:10:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2024-11-18 14:10:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 642 transitions. [2024-11-18 14:10:58,784 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 642 transitions. Word has length 140 [2024-11-18 14:10:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:58,785 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 642 transitions. [2024-11-18 14:10:58,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 642 transitions. [2024-11-18 14:10:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:10:58,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:58,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:58,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:10:58,788 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:58,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1534046852, now seen corresponding path program 2 times [2024-11-18 14:10:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:58,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308948246] [2024-11-18 14:10:58,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:10:58,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:58,820 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:10:58,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:10:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:10:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308948246] [2024-11-18 14:10:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308948246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:10:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:10:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463140280] [2024-11-18 14:10:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:58,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:10:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:10:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:10:58,937 INFO L87 Difference]: Start difference. First operand 427 states and 642 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:59,336 INFO L93 Difference]: Finished difference Result 985 states and 1489 transitions. [2024-11-18 14:10:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:10:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2024-11-18 14:10:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:59,342 INFO L225 Difference]: With dead ends: 985 [2024-11-18 14:10:59,342 INFO L226 Difference]: Without dead ends: 774 [2024-11-18 14:10:59,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:10:59,344 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 637 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:10:59,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3476 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:10:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-18 14:10:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 693. [2024-11-18 14:10:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 538 states have (on average 1.5446096654275092) internal successors, (831), 545 states have internal predecessors, (831), 114 states have call successors, (114), 40 states have call predecessors, (114), 40 states have return successors, (126), 110 states have call predecessors, (126), 111 states have call successors, (126) [2024-11-18 14:10:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1071 transitions. [2024-11-18 14:10:59,369 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1071 transitions. Word has length 141 [2024-11-18 14:10:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:59,370 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1071 transitions. [2024-11-18 14:10:59,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1071 transitions. [2024-11-18 14:10:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:10:59,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:59,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:59,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:10:59,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:59,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1846598548, now seen corresponding path program 1 times [2024-11-18 14:10:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546617427] [2024-11-18 14:10:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:10:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546617427] [2024-11-18 14:10:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546617427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:59,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:10:59,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:10:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291283892] [2024-11-18 14:10:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:59,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:10:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:10:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:10:59,505 INFO L87 Difference]: Start difference. First operand 693 states and 1071 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:59,549 INFO L93 Difference]: Finished difference Result 1365 states and 2115 transitions. [2024-11-18 14:10:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:10:59,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2024-11-18 14:10:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:59,556 INFO L225 Difference]: With dead ends: 1365 [2024-11-18 14:10:59,556 INFO L226 Difference]: Without dead ends: 695 [2024-11-18 14:10:59,559 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 14:10:59,560 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 1 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2156 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 14:10:59,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:10:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-18 14:10:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2024-11-18 14:10:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 539 states have (on average 1.5435992578849722) internal successors, (832), 547 states have internal predecessors, (832), 114 states have call successors, (114), 40 states have call predecessors, (114), 41 states have return successors, (128), 110 states have call predecessors, (128), 111 states have call successors, (128) [2024-11-18 14:10:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1074 transitions. [2024-11-18 14:10:59,591 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1074 transitions. Word has length 143 [2024-11-18 14:10:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:59,592 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1074 transitions. [2024-11-18 14:10:59,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:10:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1074 transitions. [2024-11-18 14:10:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:10:59,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:59,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:10:59,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:10:59,597 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:59,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 476158933, now seen corresponding path program 1 times [2024-11-18 14:10:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808166103] [2024-11-18 14:10:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:10:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808166103] [2024-11-18 14:10:59,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808166103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:10:59,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:10:59,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:10:59,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556092072] [2024-11-18 14:10:59,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:10:59,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:10:59,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:59,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:10:59,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:10:59,738 INFO L87 Difference]: Start difference. First operand 695 states and 1074 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:10:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:10:59,844 INFO L93 Difference]: Finished difference Result 1168 states and 1783 transitions. [2024-11-18 14:10:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:10:59,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2024-11-18 14:10:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:10:59,847 INFO L225 Difference]: With dead ends: 1168 [2024-11-18 14:10:59,847 INFO L226 Difference]: Without dead ends: 502 [2024-11-18 14:10:59,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:10:59,851 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 7 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:10:59,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3695 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:10:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-18 14:10:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2024-11-18 14:10:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 386 states have (on average 1.5025906735751295) internal successors, (580), 393 states have internal predecessors, (580), 81 states have call successors, (81), 33 states have call predecessors, (81), 34 states have return successors, (87), 78 states have call predecessors, (87), 78 states have call successors, (87) [2024-11-18 14:10:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 748 transitions. [2024-11-18 14:10:59,868 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 748 transitions. Word has length 143 [2024-11-18 14:10:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:59,868 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 748 transitions. [2024-11-18 14:10:59,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:10:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 748 transitions. [2024-11-18 14:10:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:10:59,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:59,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:59,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:10:59,870 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:59,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1067569039, now seen corresponding path program 2 times [2024-11-18 14:10:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500475938] [2024-11-18 14:10:59,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:10:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:59,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:10:59,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:11:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:11:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500475938] [2024-11-18 14:11:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500475938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:00,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:11:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019586987] [2024-11-18 14:11:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:00,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:11:00,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:11:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:11:00,027 INFO L87 Difference]: Start difference. First operand 502 states and 748 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:00,113 INFO L93 Difference]: Finished difference Result 748 states and 1094 transitions. [2024-11-18 14:11:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:11:00,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-11-18 14:11:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:00,116 INFO L225 Difference]: With dead ends: 748 [2024-11-18 14:11:00,116 INFO L226 Difference]: Without dead ends: 533 [2024-11-18 14:11:00,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:11:00,117 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 26 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:11:00,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3833 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:11:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-18 14:11:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 519. [2024-11-18 14:11:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 395 states have (on average 1.4987341772151899) internal successors, (592), 405 states have internal predecessors, (592), 88 states have call successors, (88), 33 states have call predecessors, (88), 35 states have return successors, (97), 84 states have call predecessors, (97), 85 states have call successors, (97) [2024-11-18 14:11:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 777 transitions. [2024-11-18 14:11:00,135 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 777 transitions. Word has length 144 [2024-11-18 14:11:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:00,135 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 777 transitions. [2024-11-18 14:11:00,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 777 transitions. [2024-11-18 14:11:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 14:11:00,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:00,137 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:00,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:11:00,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:00,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1129495278, now seen corresponding path program 1 times [2024-11-18 14:11:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:00,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435630599] [2024-11-18 14:11:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:00,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:11:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435630599] [2024-11-18 14:11:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435630599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:11:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088528701] [2024-11-18 14:11:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:11:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:11:00,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:11:00,258 INFO L87 Difference]: Start difference. First operand 519 states and 777 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:11:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:00,366 INFO L93 Difference]: Finished difference Result 1014 states and 1525 transitions. [2024-11-18 14:11:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:11:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 145 [2024-11-18 14:11:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:00,370 INFO L225 Difference]: With dead ends: 1014 [2024-11-18 14:11:00,370 INFO L226 Difference]: Without dead ends: 522 [2024-11-18 14:11:00,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:11:00,372 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 5 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:11:00,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3709 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:11:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-18 14:11:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-18 14:11:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 397 states have (on average 1.4962216624685138) internal successors, (594), 408 states have internal predecessors, (594), 88 states have call successors, (88), 33 states have call predecessors, (88), 36 states have return successors, (102), 84 states have call predecessors, (102), 85 states have call successors, (102) [2024-11-18 14:11:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 784 transitions. [2024-11-18 14:11:00,407 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 784 transitions. Word has length 145 [2024-11-18 14:11:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:00,407 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 784 transitions. [2024-11-18 14:11:00,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:11:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 784 transitions. [2024-11-18 14:11:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:11:00,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:00,409 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:00,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:11:00,410 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:00,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash -91870873, now seen corresponding path program 1 times [2024-11-18 14:11:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139918904] [2024-11-18 14:11:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139918904] [2024-11-18 14:11:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139918904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:11:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268179817] [2024-11-18 14:11:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:00,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:11:00,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:11:00,496 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 14:11:00,497 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 14:11:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:00,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:11:00,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:11:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:00,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:11:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:00,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268179817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:11:00,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:11:00,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 14:11:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455205941] [2024-11-18 14:11:00,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:11:00,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:11:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:11:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:11:00,878 INFO L87 Difference]: Start difference. First operand 522 states and 784 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 14:11:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:00,983 INFO L93 Difference]: Finished difference Result 1181 states and 1827 transitions. [2024-11-18 14:11:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:11:00,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 146 [2024-11-18 14:11:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:00,989 INFO L225 Difference]: With dead ends: 1181 [2024-11-18 14:11:00,989 INFO L226 Difference]: Without dead ends: 874 [2024-11-18 14:11:00,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:11:00,991 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 410 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:11:00,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2362 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:11:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-18 14:11:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 850. [2024-11-18 14:11:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 661 states have (on average 1.561270801815431) internal successors, (1032), 672 states have internal predecessors, (1032), 152 states have call successors, (152), 33 states have call predecessors, (152), 36 states have return successors, (176), 148 states have call predecessors, (176), 149 states have call successors, (176) [2024-11-18 14:11:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1360 transitions. [2024-11-18 14:11:01,022 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1360 transitions. Word has length 146 [2024-11-18 14:11:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:01,022 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1360 transitions. [2024-11-18 14:11:01,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 14:11:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1360 transitions. [2024-11-18 14:11:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:11:01,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:01,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-18 14:11:01,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:11:01,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:11:01,228 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:01,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2043706090, now seen corresponding path program 1 times [2024-11-18 14:11:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334406374] [2024-11-18 14:11:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:01,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334406374] [2024-11-18 14:11:01,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334406374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261417935] [2024-11-18 14:11:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:01,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:01,313 INFO L87 Difference]: Start difference. First operand 850 states and 1360 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:01,355 INFO L93 Difference]: Finished difference Result 1962 states and 3189 transitions. [2024-11-18 14:11:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2024-11-18 14:11:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:01,362 INFO L225 Difference]: With dead ends: 1962 [2024-11-18 14:11:01,362 INFO L226 Difference]: Without dead ends: 1183 [2024-11-18 14:11:01,365 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 14:11:01,366 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 105 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 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 14:11:01,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 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 14:11:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-11-18 14:11:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1175. [2024-11-18 14:11:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 922 states have (on average 1.5802603036876355) internal successors, (1457), 933 states have internal predecessors, (1457), 216 states have call successors, (216), 33 states have call predecessors, (216), 36 states have return successors, (250), 212 states have call predecessors, (250), 213 states have call successors, (250) [2024-11-18 14:11:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1923 transitions. [2024-11-18 14:11:01,412 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1923 transitions. Word has length 152 [2024-11-18 14:11:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:01,413 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1923 transitions. [2024-11-18 14:11:01,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1923 transitions. [2024-11-18 14:11:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 14:11:01,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:01,418 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-18 14:11:01,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:11:01,418 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:01,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 454977642, now seen corresponding path program 1 times [2024-11-18 14:11:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356483755] [2024-11-18 14:11:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356483755] [2024-11-18 14:11:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356483755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:01,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090022272] [2024-11-18 14:11:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:01,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:01,473 INFO L87 Difference]: Start difference. First operand 1175 states and 1923 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:01,511 INFO L93 Difference]: Finished difference Result 2742 states and 4522 transitions. [2024-11-18 14:11:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-11-18 14:11:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:01,519 INFO L225 Difference]: With dead ends: 2742 [2024-11-18 14:11:01,519 INFO L226 Difference]: Without dead ends: 1691 [2024-11-18 14:11:01,522 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 14:11:01,523 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 103 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1088 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 14:11:01,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1088 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-18 14:11:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1683. [2024-11-18 14:11:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1335 states have (on average 1.594007490636704) internal successors, (2128), 1346 states have internal predecessors, (2128), 311 states have call successors, (311), 33 states have call predecessors, (311), 36 states have return successors, (345), 307 states have call predecessors, (345), 308 states have call successors, (345) [2024-11-18 14:11:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2784 transitions. [2024-11-18 14:11:01,578 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2784 transitions. Word has length 153 [2024-11-18 14:11:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:01,578 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2784 transitions. [2024-11-18 14:11:01,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2784 transitions. [2024-11-18 14:11:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:11:01,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:01,586 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:11:01,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:11:01,586 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:01,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2089116104, now seen corresponding path program 1 times [2024-11-18 14:11:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821206135] [2024-11-18 14:11:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821206135] [2024-11-18 14:11:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821206135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057997548] [2024-11-18 14:11:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:01,641 INFO L87 Difference]: Start difference. First operand 1683 states and 2784 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:01,718 INFO L93 Difference]: Finished difference Result 3894 states and 6497 transitions. [2024-11-18 14:11:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2024-11-18 14:11:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:01,729 INFO L225 Difference]: With dead ends: 3894 [2024-11-18 14:11:01,729 INFO L226 Difference]: Without dead ends: 2460 [2024-11-18 14:11:01,734 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 14:11:01,734 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 101 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1085 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 14:11:01,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1085 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2024-11-18 14:11:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2452. [2024-11-18 14:11:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1981 states have (on average 1.6047450782433115) internal successors, (3179), 1992 states have internal predecessors, (3179), 434 states have call successors, (434), 33 states have call predecessors, (434), 36 states have return successors, (484), 430 states have call predecessors, (484), 431 states have call successors, (484) [2024-11-18 14:11:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 4097 transitions. [2024-11-18 14:11:01,810 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 4097 transitions. Word has length 154 [2024-11-18 14:11:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:01,811 INFO L471 AbstractCegarLoop]: Abstraction has 2452 states and 4097 transitions. [2024-11-18 14:11:01,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 4097 transitions. [2024-11-18 14:11:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:11:01,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:01,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:11:01,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:11:01,821 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:01,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2088571415, now seen corresponding path program 1 times [2024-11-18 14:11:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118241850] [2024-11-18 14:11:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118241850] [2024-11-18 14:11:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118241850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:01,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:01,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042711293] [2024-11-18 14:11:01,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:01,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:01,871 INFO L87 Difference]: Start difference. First operand 2452 states and 4097 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:01,940 INFO L93 Difference]: Finished difference Result 5688 states and 9574 transitions. [2024-11-18 14:11:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:01,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2024-11-18 14:11:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:01,958 INFO L225 Difference]: With dead ends: 5688 [2024-11-18 14:11:01,958 INFO L226 Difference]: Without dead ends: 3689 [2024-11-18 14:11:01,966 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 14:11:01,966 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 99 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1085 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 14:11:01,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1085 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2024-11-18 14:11:02,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3681. [2024-11-18 14:11:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3031 states have (on average 1.6120092378752886) internal successors, (4886), 3042 states have internal predecessors, (4886), 613 states have call successors, (613), 33 states have call predecessors, (613), 36 states have return successors, (689), 609 states have call predecessors, (689), 610 states have call successors, (689) [2024-11-18 14:11:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 6188 transitions. [2024-11-18 14:11:02,130 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 6188 transitions. Word has length 155 [2024-11-18 14:11:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:02,130 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 6188 transitions. [2024-11-18 14:11:02,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:02,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 6188 transitions. [2024-11-18 14:11:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:11:02,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:02,144 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:11:02,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:11:02,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:02,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1560972212, now seen corresponding path program 1 times [2024-11-18 14:11:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876953219] [2024-11-18 14:11:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876953219] [2024-11-18 14:11:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876953219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635518330] [2024-11-18 14:11:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:02,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:02,197 INFO L87 Difference]: Start difference. First operand 3681 states and 6188 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:02,286 INFO L93 Difference]: Finished difference Result 8636 states and 14621 transitions. [2024-11-18 14:11:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:02,287 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2024-11-18 14:11:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:02,312 INFO L225 Difference]: With dead ends: 8636 [2024-11-18 14:11:02,313 INFO L226 Difference]: Without dead ends: 5720 [2024-11-18 14:11:02,323 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 14:11:02,324 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 97 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1093 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 14:11:02,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1093 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2024-11-18 14:11:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5712. [2024-11-18 14:11:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 4686 states have (on average 1.608621425522834) internal successors, (7538), 4697 states have internal predecessors, (7538), 989 states have call successors, (989), 33 states have call predecessors, (989), 36 states have return successors, (1109), 985 states have call predecessors, (1109), 986 states have call successors, (1109) [2024-11-18 14:11:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 9636 transitions. [2024-11-18 14:11:02,552 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 9636 transitions. Word has length 156 [2024-11-18 14:11:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:02,552 INFO L471 AbstractCegarLoop]: Abstraction has 5712 states and 9636 transitions. [2024-11-18 14:11:02,553 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 9636 transitions. [2024-11-18 14:11:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:11:02,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:02,576 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:11:02,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:11:02,576 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:02,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1670893413, now seen corresponding path program 1 times [2024-11-18 14:11:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:02,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367200834] [2024-11-18 14:11:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367200834] [2024-11-18 14:11:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367200834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697586398] [2024-11-18 14:11:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:02,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:02,627 INFO L87 Difference]: Start difference. First operand 5712 states and 9636 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:02,885 INFO L93 Difference]: Finished difference Result 13973 states and 23731 transitions. [2024-11-18 14:11:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:02,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2024-11-18 14:11:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:02,942 INFO L225 Difference]: With dead ends: 13973 [2024-11-18 14:11:02,942 INFO L226 Difference]: Without dead ends: 9403 [2024-11-18 14:11:02,964 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 14:11:02,964 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 95 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1088 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 14:11:02,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1088 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2024-11-18 14:11:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 9395. [2024-11-18 14:11:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 7763 states have (on average 1.608141182532526) internal successors, (12484), 7774 states have internal predecessors, (12484), 1595 states have call successors, (1595), 33 states have call predecessors, (1595), 36 states have return successors, (1793), 1591 states have call predecessors, (1793), 1592 states have call successors, (1793) [2024-11-18 14:11:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 15872 transitions. [2024-11-18 14:11:03,302 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 15872 transitions. Word has length 157 [2024-11-18 14:11:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:03,302 INFO L471 AbstractCegarLoop]: Abstraction has 9395 states and 15872 transitions. [2024-11-18 14:11:03,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 15872 transitions. [2024-11-18 14:11:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 14:11:03,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:03,333 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:03,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:11:03,334 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:03,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash 472855134, now seen corresponding path program 1 times [2024-11-18 14:11:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033880436] [2024-11-18 14:11:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033880436] [2024-11-18 14:11:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033880436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898501341] [2024-11-18 14:11:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:03,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:03,394 INFO L87 Difference]: Start difference. First operand 9395 states and 15872 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:03,730 INFO L93 Difference]: Finished difference Result 24157 states and 40996 transitions. [2024-11-18 14:11:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:03,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2024-11-18 14:11:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:03,782 INFO L225 Difference]: With dead ends: 24157 [2024-11-18 14:11:03,782 INFO L226 Difference]: Without dead ends: 16356 [2024-11-18 14:11:03,809 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 14:11:03,809 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 93 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 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 14:11:03,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 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 14:11:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16356 states. [2024-11-18 14:11:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16356 to 16348. [2024-11-18 14:11:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16348 states, 13513 states have (on average 1.6003848146229556) internal successors, (21626), 13524 states have internal predecessors, (21626), 2798 states have call successors, (2798), 33 states have call predecessors, (2798), 36 states have return successors, (3140), 2794 states have call predecessors, (3140), 2795 states have call successors, (3140) [2024-11-18 14:11:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 27564 transitions. [2024-11-18 14:11:04,304 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 27564 transitions. Word has length 158 [2024-11-18 14:11:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:04,305 INFO L471 AbstractCegarLoop]: Abstraction has 16348 states and 27564 transitions. [2024-11-18 14:11:04,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 27564 transitions. [2024-11-18 14:11:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:11:04,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:04,346 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:04,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:11:04,347 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:04,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1375584316, now seen corresponding path program 1 times [2024-11-18 14:11:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112290151] [2024-11-18 14:11:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112290151] [2024-11-18 14:11:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112290151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:04,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773976066] [2024-11-18 14:11:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:04,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:04,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:04,553 INFO L87 Difference]: Start difference. First operand 16348 states and 27564 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:05,199 INFO L93 Difference]: Finished difference Result 43123 states and 73055 transitions. [2024-11-18 14:11:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2024-11-18 14:11:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:05,295 INFO L225 Difference]: With dead ends: 43123 [2024-11-18 14:11:05,295 INFO L226 Difference]: Without dead ends: 29011 [2024-11-18 14:11:05,335 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 14:11:05,336 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 91 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1088 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 14:11:05,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1088 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29011 states. [2024-11-18 14:11:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29011 to 29003. [2024-11-18 14:11:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29003 states, 24129 states have (on average 1.5968336856065315) internal successors, (38530), 24140 states have internal predecessors, (38530), 4837 states have call successors, (4837), 33 states have call predecessors, (4837), 36 states have return successors, (5453), 4833 states have call predecessors, (5453), 4834 states have call successors, (5453) [2024-11-18 14:11:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29003 states to 29003 states and 48820 transitions. [2024-11-18 14:11:06,427 INFO L78 Accepts]: Start accepts. Automaton has 29003 states and 48820 transitions. Word has length 159 [2024-11-18 14:11:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:06,428 INFO L471 AbstractCegarLoop]: Abstraction has 29003 states and 48820 transitions. [2024-11-18 14:11:06,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 29003 states and 48820 transitions. [2024-11-18 14:11:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:11:06,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:06,481 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:06,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:11:06,481 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:06,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 729420924, now seen corresponding path program 1 times [2024-11-18 14:11:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973323972] [2024-11-18 14:11:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:06,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973323972] [2024-11-18 14:11:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973323972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:06,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:06,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420378523] [2024-11-18 14:11:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:06,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:06,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:06,541 INFO L87 Difference]: Start difference. First operand 29003 states and 48820 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:07,934 INFO L93 Difference]: Finished difference Result 78885 states and 133282 transitions. [2024-11-18 14:11:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-18 14:11:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:08,116 INFO L225 Difference]: With dead ends: 78885 [2024-11-18 14:11:08,117 INFO L226 Difference]: Without dead ends: 52890 [2024-11-18 14:11:08,177 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 14:11:08,178 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 89 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1092 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 14:11:08,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1092 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52890 states. [2024-11-18 14:11:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52890 to 52882. [2024-11-18 14:11:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52882 states, 44293 states have (on average 1.591651050956133) internal successors, (70499), 44304 states have internal predecessors, (70499), 8552 states have call successors, (8552), 33 states have call predecessors, (8552), 36 states have return successors, (9700), 8548 states have call predecessors, (9700), 8549 states have call successors, (9700) [2024-11-18 14:11:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52882 states to 52882 states and 88751 transitions. [2024-11-18 14:11:10,120 INFO L78 Accepts]: Start accepts. Automaton has 52882 states and 88751 transitions. Word has length 160 [2024-11-18 14:11:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:10,123 INFO L471 AbstractCegarLoop]: Abstraction has 52882 states and 88751 transitions. [2024-11-18 14:11:10,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 52882 states and 88751 transitions. [2024-11-18 14:11:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:11:10,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:10,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:10,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:11:10,198 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:10,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash 399875172, now seen corresponding path program 1 times [2024-11-18 14:11:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563512511] [2024-11-18 14:11:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:11:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563512511] [2024-11-18 14:11:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563512511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:11:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:11:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:11:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305843755] [2024-11-18 14:11:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:11:10,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:11:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:11:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:11:10,520 INFO L87 Difference]: Start difference. First operand 52882 states and 88751 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:12,123 INFO L93 Difference]: Finished difference Result 98656 states and 165900 transitions. [2024-11-18 14:11:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:11:12,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2024-11-18 14:11:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:12,555 INFO L225 Difference]: With dead ends: 98656 [2024-11-18 14:11:12,555 INFO L226 Difference]: Without dead ends: 98349 [2024-11-18 14:11:12,605 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 14:11:12,605 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 84 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1094 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 14:11:12,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1094 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:11:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98349 states. [2024-11-18 14:11:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98349 to 98341. [2024-11-18 14:11:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98341 states, 82953 states have (on average 1.5848613070051716) internal successors, (131469), 82964 states have internal predecessors, (131469), 15351 states have call successors, (15351), 33 states have call predecessors, (15351), 36 states have return successors, (17545), 15347 states have call predecessors, (17545), 15348 states have call successors, (17545) [2024-11-18 14:11:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98341 states to 98341 states and 164365 transitions. [2024-11-18 14:11:16,132 INFO L78 Accepts]: Start accepts. Automaton has 98341 states and 164365 transitions. Word has length 161 [2024-11-18 14:11:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:16,133 INFO L471 AbstractCegarLoop]: Abstraction has 98341 states and 164365 transitions. [2024-11-18 14:11:16,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:11:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 98341 states and 164365 transitions. [2024-11-18 14:11:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 14:11:16,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:11:16,263 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:11:16,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:11:16,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:11:16,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:11:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash 121479325, now seen corresponding path program 1 times [2024-11-18 14:11:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:11:16,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282697498] [2024-11-18 14:11:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:11:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:11:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:11:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282697498] [2024-11-18 14:11:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282697498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:11:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254365370] [2024-11-18 14:11:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:11:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:11:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:11:16,671 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 14:11:16,672 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 14:11:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:11:16,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:11:16,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:11:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:11:17,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:11:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:11:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254365370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:11:17,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:11:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-18 14:11:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550348527] [2024-11-18 14:11:17,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:11:17,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:11:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:11:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:11:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:11:17,518 INFO L87 Difference]: Start difference. First operand 98341 states and 164365 transitions. Second operand has 28 states, 26 states have (on average 9.884615384615385) internal successors, (257), 24 states have internal predecessors, (257), 9 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-18 14:11:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:11:32,112 INFO L93 Difference]: Finished difference Result 392777 states and 680320 transitions. [2024-11-18 14:11:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-18 14:11:32,112 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 9.884615384615385) internal successors, (257), 24 states have internal predecessors, (257), 9 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 162 [2024-11-18 14:11:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:11:33,935 INFO L225 Difference]: With dead ends: 392777 [2024-11-18 14:11:33,935 INFO L226 Difference]: Without dead ends: 392495 [2024-11-18 14:11:34,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-11-18 14:11:34,111 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 5468 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 13080 mSolverCounterSat, 1838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 14918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 13080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:11:34,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5529 Valid, 5413 Invalid, 14918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1838 Valid, 13080 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-18 14:11:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392495 states. [2024-11-18 14:11:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392495 to 391979. [2024-11-18 14:11:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391979 states, 330742 states have (on average 1.5855803012620109) internal successors, (524418), 330574 states have internal predecessors, (524418), 61034 states have call successors, (61034), 173 states have call predecessors, (61034), 202 states have return successors, (85028), 61253 states have call predecessors, (85028), 61026 states have call successors, (85028) [2024-11-18 14:11:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391979 states to 391979 states and 670480 transitions. [2024-11-18 14:11:50,923 INFO L78 Accepts]: Start accepts. Automaton has 391979 states and 670480 transitions. Word has length 162 [2024-11-18 14:11:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:11:50,923 INFO L471 AbstractCegarLoop]: Abstraction has 391979 states and 670480 transitions. [2024-11-18 14:11:50,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 9.884615384615385) internal successors, (257), 24 states have internal predecessors, (257), 9 states have call successors, (50), 8 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-18 14:11:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 391979 states and 670480 transitions.