./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_fib-2.i --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/seq-pthread/cs_fib-2.i -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 2f188ac4b0bdfe335e0fcb7c5645493965a99a7b8a1d7a552e9d512c30775fb8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:16:37,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:16:37,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:16:37,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:16:37,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:16:37,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:16:37,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:16:37,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:16:37,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:16:37,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:16:37,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:16:37,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:16:37,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:16:37,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:16:37,698 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:16:37,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:16:37,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:16:37,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:16:37,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:16:37,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:16:37,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:16:37,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:16:37,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:16:37,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:16:37,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:16:37,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:16:37,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:16:37,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:16:37,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:16:37,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:16:37,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:16:37,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:16:37,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:37,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:16:37,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:16:37,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:16:37,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:16:37,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f188ac4b0bdfe335e0fcb7c5645493965a99a7b8a1d7a552e9d512c30775fb8 [2024-11-18 15:16:37,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:16:37,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:16:37,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:16:37,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:16:37,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:16:37,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_fib-2.i [2024-11-18 15:16:39,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:16:39,547 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:16:39,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_fib-2.i [2024-11-18 15:16:39,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696e2b8f5/5b26a7c637e246d39a6730b520e94db6/FLAGb74c3f623 [2024-11-18 15:16:39,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696e2b8f5/5b26a7c637e246d39a6730b520e94db6 [2024-11-18 15:16:39,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:16:39,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:16:39,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:39,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:16:39,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:16:39,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:39" (1/1) ... [2024-11-18 15:16:39,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fed6b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:39, skipping insertion in model container [2024-11-18 15:16:39,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:39" (1/1) ... [2024-11-18 15:16:39,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:16:39,904 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/seq-pthread/cs_fib-2.i[23457,23470] [2024-11-18 15:16:40,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:40,042 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:16:40,074 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/seq-pthread/cs_fib-2.i[23457,23470] [2024-11-18 15:16:40,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:40,190 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:16:40,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40 WrapperNode [2024-11-18 15:16:40,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:40,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:40,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:16:40,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:16:40,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,261 INFO L138 Inliner]: procedures = 145, calls = 437, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 746 [2024-11-18 15:16:40,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:40,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:16:40,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:16:40,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:16:40,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,332 INFO L175 MemorySlicer]: Split 281 memory accesses to 17 slices as follows [2, 8, 8, 11, 8, 8, 53, 48, 22, 6, 22, 10, 31, 0, 2, 31, 11]. 19 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 3, 3, 0, 3, 1, 18, 18, 6, 1, 6, 6, 0, 0, 0, 0, 0]. The 65 writes are split as follows [0, 2, 2, 1, 2, 1, 20, 15, 7, 1, 7, 2, 1, 0, 2, 1, 1]. [2024-11-18 15:16:40,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:16:40,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:16:40,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:16:40,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:16:40,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (1/1) ... [2024-11-18 15:16:40,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:40,437 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 15:16:40,441 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 15:16:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:16:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:16:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:16:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:16:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:16:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:16:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 15:16:40,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 15:16:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:16:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:16:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:16:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:16:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:16:40,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:16:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:16:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:16:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:16:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:16:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:16:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:16:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:16:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:16:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:16:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:16:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:40,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:16:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:16:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:16:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:16:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:16:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:16:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:16:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:16:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:16:40,779 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:16:40,782 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:16:41,064 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:41,065 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:16:41,066 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:41,066 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:16:41,066 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L749: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:16:41,066 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2024-11-18 15:16:41,066 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:16:45,521 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-11-18 15:16:45,521 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:16:45,543 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:16:45,545 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 15:16:45,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:16:45 BoogieIcfgContainer [2024-11-18 15:16:45,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:16:45,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:16:45,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:16:45,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:16:45,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:16:39" (1/3) ... [2024-11-18 15:16:45,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51627a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:16:45, skipping insertion in model container [2024-11-18 15:16:45,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:40" (2/3) ... [2024-11-18 15:16:45,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51627a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:16:45, skipping insertion in model container [2024-11-18 15:16:45,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:16:45" (3/3) ... [2024-11-18 15:16:45,554 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib-2.i [2024-11-18 15:16:45,569 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:16:45,570 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:16:45,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:16:45,644 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;@1130ccd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:16:45,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:16:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 111 states have internal predecessors, (147), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 15:16:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 15:16:45,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:45,675 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:45,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:45,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1675804579, now seen corresponding path program 1 times [2024-11-18 15:16:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757256268] [2024-11-18 15:16:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 15:16:46,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757256268] [2024-11-18 15:16:46,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757256268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:46,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:46,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:16:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480137613] [2024-11-18 15:16:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:46,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:16:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:16:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:16:46,397 INFO L87 Difference]: Start difference. First operand has 183 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 111 states have internal predecessors, (147), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:46,445 INFO L93 Difference]: Finished difference Result 364 states and 620 transitions. [2024-11-18 15:16:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:16:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2024-11-18 15:16:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:46,460 INFO L225 Difference]: With dead ends: 364 [2024-11-18 15:16:46,460 INFO L226 Difference]: Without dead ends: 179 [2024-11-18 15:16:46,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:16:46,472 INFO L432 NwaCegarLoop]: 273 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, 273 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 15:16:46,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-18 15:16:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-18 15:16:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 108 states have internal predecessors, (138), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 15:16:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 269 transitions. [2024-11-18 15:16:46,548 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 269 transitions. Word has length 254 [2024-11-18 15:16:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:46,550 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 269 transitions. [2024-11-18 15:16:46,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 269 transitions. [2024-11-18 15:16:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-18 15:16:46,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:46,560 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:46,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:16:46,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:46,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 724528955, now seen corresponding path program 1 times [2024-11-18 15:16:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:46,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757609309] [2024-11-18 15:16:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 15:16:47,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:47,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757609309] [2024-11-18 15:16:47,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757609309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:47,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:16:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532208239] [2024-11-18 15:16:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:47,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:16:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:16:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:16:47,125 INFO L87 Difference]: Start difference. First operand 179 states and 269 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:51,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:16:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:51,267 INFO L93 Difference]: Finished difference Result 356 states and 536 transitions. [2024-11-18 15:16:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:16:51,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2024-11-18 15:16:51,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:51,272 INFO L225 Difference]: With dead ends: 356 [2024-11-18 15:16:51,272 INFO L226 Difference]: Without dead ends: 186 [2024-11-18 15:16:51,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:51,276 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 7 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:51,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 789 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 15:16:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-18 15:16:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2024-11-18 15:16:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 110 states have internal predecessors, (140), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 15:16:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2024-11-18 15:16:51,297 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 255 [2024-11-18 15:16:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:51,298 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2024-11-18 15:16:51,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2024-11-18 15:16:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 15:16:51,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:51,303 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:16:51,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:51,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1258462735, now seen corresponding path program 1 times [2024-11-18 15:16:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772375880] [2024-11-18 15:16:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 15:16:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772375880] [2024-11-18 15:16:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772375880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:51,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:16:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643665668] [2024-11-18 15:16:51,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:51,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:16:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:16:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:16:51,752 INFO L87 Difference]: Start difference. First operand 181 states and 271 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:51,812 INFO L93 Difference]: Finished difference Result 361 states and 542 transitions. [2024-11-18 15:16:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:16:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-18 15:16:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:51,815 INFO L225 Difference]: With dead ends: 361 [2024-11-18 15:16:51,815 INFO L226 Difference]: Without dead ends: 184 [2024-11-18 15:16:51,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:51,819 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 2 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:51,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 793 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-18 15:16:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2024-11-18 15:16:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 112 states have internal predecessors, (142), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 15:16:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 273 transitions. [2024-11-18 15:16:51,838 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 273 transitions. Word has length 261 [2024-11-18 15:16:51,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:51,838 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 273 transitions. [2024-11-18 15:16:51,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:51,839 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 273 transitions. [2024-11-18 15:16:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-18 15:16:51,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:51,841 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:51,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:16:51,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:51,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1773761869, now seen corresponding path program 1 times [2024-11-18 15:16:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:51,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608364701] [2024-11-18 15:16:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2024-11-18 15:16:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608364701] [2024-11-18 15:16:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608364701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285166159] [2024-11-18 15:16:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:52,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:52,896 INFO L87 Difference]: Start difference. First operand 183 states and 273 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:53,035 INFO L93 Difference]: Finished difference Result 356 states and 534 transitions. [2024-11-18 15:16:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 264 [2024-11-18 15:16:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:53,040 INFO L225 Difference]: With dead ends: 356 [2024-11-18 15:16:53,040 INFO L226 Difference]: Without dead ends: 354 [2024-11-18 15:16:53,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:53,042 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 175 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:53,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1014 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-18 15:16:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2024-11-18 15:16:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 208 states have (on average 1.2836538461538463) internal successors, (267), 209 states have internal predecessors, (267), 131 states have call successors, (131), 11 states have call predecessors, (131), 11 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 530 transitions. [2024-11-18 15:16:53,077 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 530 transitions. Word has length 264 [2024-11-18 15:16:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:53,078 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 530 transitions. [2024-11-18 15:16:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 530 transitions. [2024-11-18 15:16:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 15:16:53,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:53,086 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:53,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:16:53,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:53,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 415666836, now seen corresponding path program 1 times [2024-11-18 15:16:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:53,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980346894] [2024-11-18 15:16:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:53,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3126 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2024-11-18 15:16:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:53,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980346894] [2024-11-18 15:16:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980346894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:53,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726320284] [2024-11-18 15:16:53,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:53,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:53,852 INFO L87 Difference]: Start difference. First operand 351 states and 530 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 15:16:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:53,987 INFO L93 Difference]: Finished difference Result 360 states and 537 transitions. [2024-11-18 15:16:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 269 [2024-11-18 15:16:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:53,992 INFO L225 Difference]: With dead ends: 360 [2024-11-18 15:16:53,993 INFO L226 Difference]: Without dead ends: 358 [2024-11-18 15:16:53,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:53,994 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 171 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:53,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1018 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-18 15:16:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 355. [2024-11-18 15:16:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 211 states have (on average 1.2796208530805686) internal successors, (270), 212 states have internal predecessors, (270), 131 states have call successors, (131), 12 states have call predecessors, (131), 12 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 533 transitions. [2024-11-18 15:16:54,033 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 533 transitions. Word has length 269 [2024-11-18 15:16:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:54,034 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 533 transitions. [2024-11-18 15:16:54,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-18 15:16:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 533 transitions. [2024-11-18 15:16:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-18 15:16:54,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:54,038 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:54,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:16:54,038 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:54,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1079459475, now seen corresponding path program 1 times [2024-11-18 15:16:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026629682] [2024-11-18 15:16:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3132 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3128 trivial. 0 not checked. [2024-11-18 15:16:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026629682] [2024-11-18 15:16:54,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026629682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:54,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965827456] [2024-11-18 15:16:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:54,787 INFO L87 Difference]: Start difference. First operand 355 states and 533 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-18 15:16:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:54,923 INFO L93 Difference]: Finished difference Result 364 states and 540 transitions. [2024-11-18 15:16:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 274 [2024-11-18 15:16:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:54,926 INFO L225 Difference]: With dead ends: 364 [2024-11-18 15:16:54,927 INFO L226 Difference]: Without dead ends: 362 [2024-11-18 15:16:54,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:54,928 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 170 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:54,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1015 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-18 15:16:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 359. [2024-11-18 15:16:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 215 states have internal predecessors, (273), 131 states have call successors, (131), 13 states have call predecessors, (131), 13 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 536 transitions. [2024-11-18 15:16:54,954 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 536 transitions. Word has length 274 [2024-11-18 15:16:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:54,955 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 536 transitions. [2024-11-18 15:16:54,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-18 15:16:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 536 transitions. [2024-11-18 15:16:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-18 15:16:54,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:54,962 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:54,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:16:54,963 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:54,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 123472372, now seen corresponding path program 1 times [2024-11-18 15:16:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631384476] [2024-11-18 15:16:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3142 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2024-11-18 15:16:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631384476] [2024-11-18 15:16:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631384476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668297363] [2024-11-18 15:16:55,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:55,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:55,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:55,708 INFO L87 Difference]: Start difference. First operand 359 states and 536 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 15:16:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:55,830 INFO L93 Difference]: Finished difference Result 368 states and 543 transitions. [2024-11-18 15:16:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:55,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 279 [2024-11-18 15:16:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:55,834 INFO L225 Difference]: With dead ends: 368 [2024-11-18 15:16:55,834 INFO L226 Difference]: Without dead ends: 366 [2024-11-18 15:16:55,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:55,835 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 169 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:55,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1018 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-18 15:16:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 363. [2024-11-18 15:16:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 217 states have (on average 1.271889400921659) internal successors, (276), 218 states have internal predecessors, (276), 131 states have call successors, (131), 14 states have call predecessors, (131), 14 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 539 transitions. [2024-11-18 15:16:55,876 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 539 transitions. Word has length 279 [2024-11-18 15:16:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 539 transitions. [2024-11-18 15:16:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 15:16:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 539 transitions. [2024-11-18 15:16:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 15:16:55,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:55,881 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:55,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:16:55,881 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:55,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1525749133, now seen corresponding path program 1 times [2024-11-18 15:16:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703159837] [2024-11-18 15:16:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3148 trivial. 0 not checked. [2024-11-18 15:16:56,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:56,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703159837] [2024-11-18 15:16:56,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703159837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:56,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:56,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:56,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803007680] [2024-11-18 15:16:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:56,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:56,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:56,543 INFO L87 Difference]: Start difference. First operand 363 states and 539 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 15:16:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:56,665 INFO L93 Difference]: Finished difference Result 372 states and 546 transitions. [2024-11-18 15:16:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 284 [2024-11-18 15:16:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:56,668 INFO L225 Difference]: With dead ends: 372 [2024-11-18 15:16:56,668 INFO L226 Difference]: Without dead ends: 370 [2024-11-18 15:16:56,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:56,669 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 168 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:56,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1018 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-18 15:16:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2024-11-18 15:16:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 220 states have (on average 1.268181818181818) internal successors, (279), 221 states have internal predecessors, (279), 131 states have call successors, (131), 15 states have call predecessors, (131), 15 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 542 transitions. [2024-11-18 15:16:56,712 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 542 transitions. Word has length 284 [2024-11-18 15:16:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:56,712 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 542 transitions. [2024-11-18 15:16:56,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 15:16:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 542 transitions. [2024-11-18 15:16:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-18 15:16:56,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:56,716 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 6, 5, 5, 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, 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 15:16:56,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:16:56,716 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:56,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -956466860, now seen corresponding path program 1 times [2024-11-18 15:16:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153018586] [2024-11-18 15:16:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3164 trivial. 0 not checked. [2024-11-18 15:16:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153018586] [2024-11-18 15:16:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153018586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:57,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378603400] [2024-11-18 15:16:57,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:57,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:57,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:57,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:57,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:57,436 INFO L87 Difference]: Start difference. First operand 367 states and 542 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 15:16:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:57,578 INFO L93 Difference]: Finished difference Result 376 states and 549 transitions. [2024-11-18 15:16:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:57,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 289 [2024-11-18 15:16:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:57,587 INFO L225 Difference]: With dead ends: 376 [2024-11-18 15:16:57,588 INFO L226 Difference]: Without dead ends: 372 [2024-11-18 15:16:57,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:57,590 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 167 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:57,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1018 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:16:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-18 15:16:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 369. [2024-11-18 15:16:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 222 states have (on average 1.2612612612612613) internal successors, (280), 222 states have internal predecessors, (280), 131 states have call successors, (131), 16 states have call predecessors, (131), 15 states have return successors, (132), 130 states have call predecessors, (132), 129 states have call successors, (132) [2024-11-18 15:16:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 543 transitions. [2024-11-18 15:16:57,624 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 543 transitions. Word has length 289 [2024-11-18 15:16:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:57,625 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 543 transitions. [2024-11-18 15:16:57,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 15:16:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 543 transitions. [2024-11-18 15:16:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 15:16:57,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:57,629 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 7, 6, 6, 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, 1, 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 15:16:57,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:16:57,630 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:57,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1172861357, now seen corresponding path program 1 times [2024-11-18 15:16:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480613773] [2024-11-18 15:16:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2024-11-18 15:16:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480613773] [2024-11-18 15:16:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480613773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123897268] [2024-11-18 15:16:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:58,123 INFO L87 Difference]: Start difference. First operand 369 states and 543 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 15:16:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:58,190 INFO L93 Difference]: Finished difference Result 372 states and 545 transitions. [2024-11-18 15:16:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 294 [2024-11-18 15:16:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:58,193 INFO L225 Difference]: With dead ends: 372 [2024-11-18 15:16:58,193 INFO L226 Difference]: Without dead ends: 254 [2024-11-18 15:16:58,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:16:58,194 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 163 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:58,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1047 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-18 15:16:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2024-11-18 15:16:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 159 states have (on average 1.3522012578616351) internal successors, (215), 160 states have internal predecessors, (215), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (85), 83 states have call predecessors, (85), 83 states have call successors, (85) [2024-11-18 15:16:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 384 transitions. [2024-11-18 15:16:58,212 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 384 transitions. Word has length 294 [2024-11-18 15:16:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:58,213 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 384 transitions. [2024-11-18 15:16:58,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 15:16:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 384 transitions. [2024-11-18 15:16:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 15:16:58,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:58,216 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:58,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:16:58,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:58,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1329753853, now seen corresponding path program 1 times [2024-11-18 15:16:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185744916] [2024-11-18 15:16:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:16:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185744916] [2024-11-18 15:16:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185744916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:58,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:16:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719731955] [2024-11-18 15:16:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:58,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:16:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:16:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:58,992 INFO L87 Difference]: Start difference. First operand 253 states and 384 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-18 15:17:03,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:07,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:11,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:11,261 INFO L93 Difference]: Finished difference Result 602 states and 918 transitions. [2024-11-18 15:17:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:11,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) Word has length 332 [2024-11-18 15:17:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:11,265 INFO L225 Difference]: With dead ends: 602 [2024-11-18 15:17:11,265 INFO L226 Difference]: Without dead ends: 497 [2024-11-18 15:17:11,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:11,267 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 255 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:11,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1468 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-18 15:17:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-18 15:17:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 480. [2024-11-18 15:17:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 300 states have (on average 1.3533333333333333) internal successors, (406), 304 states have internal predecessors, (406), 159 states have call successors, (159), 17 states have call predecessors, (159), 20 states have return successors, (173), 158 states have call predecessors, (173), 158 states have call successors, (173) [2024-11-18 15:17:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 738 transitions. [2024-11-18 15:17:11,304 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 738 transitions. Word has length 332 [2024-11-18 15:17:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:11,304 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 738 transitions. [2024-11-18 15:17:11,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-18 15:17:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 738 transitions. [2024-11-18 15:17:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 15:17:11,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:11,308 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:11,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:17:11,308 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:11,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1046631069, now seen corresponding path program 1 times [2024-11-18 15:17:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608047305] [2024-11-18 15:17:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:17:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608047305] [2024-11-18 15:17:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608047305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:12,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022737834] [2024-11-18 15:17:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:12,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:12,051 INFO L87 Difference]: Start difference. First operand 480 states and 738 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-18 15:17:16,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:20,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:24,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:24,318 INFO L93 Difference]: Finished difference Result 881 states and 1341 transitions. [2024-11-18 15:17:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) Word has length 332 [2024-11-18 15:17:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:24,322 INFO L225 Difference]: With dead ends: 881 [2024-11-18 15:17:24,323 INFO L226 Difference]: Without dead ends: 438 [2024-11-18 15:17:24,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:24,325 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 257 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:24,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1491 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-18 15:17:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-18 15:17:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 424. [2024-11-18 15:17:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 263 states have (on average 1.285171102661597) internal successors, (338), 266 states have internal predecessors, (338), 142 states have call successors, (142), 16 states have call predecessors, (142), 18 states have return successors, (149), 141 states have call predecessors, (149), 141 states have call successors, (149) [2024-11-18 15:17:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 629 transitions. [2024-11-18 15:17:24,355 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 629 transitions. Word has length 332 [2024-11-18 15:17:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:24,356 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 629 transitions. [2024-11-18 15:17:24,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 4 states have call successors, (48) [2024-11-18 15:17:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 629 transitions. [2024-11-18 15:17:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 15:17:24,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:24,359 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:24,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 15:17:24,360 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:24,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash 630699581, now seen corresponding path program 1 times [2024-11-18 15:17:24,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:24,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400886273] [2024-11-18 15:17:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3818 trivial. 0 not checked. [2024-11-18 15:17:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400886273] [2024-11-18 15:17:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400886273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943038730] [2024-11-18 15:17:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:24,933 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 15:17:24,934 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 15:17:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:25,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 15:17:25,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2024-11-18 15:17:27,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:17:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943038730] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 15:17:28,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7] total 17 [2024-11-18 15:17:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139368977] [2024-11-18 15:17:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:28,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:17:28,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:17:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-18 15:17:28,683 INFO L87 Difference]: Start difference. First operand 424 states and 629 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-18 15:17:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:30,442 INFO L93 Difference]: Finished difference Result 921 states and 1366 transitions. [2024-11-18 15:17:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:17:30,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 332 [2024-11-18 15:17:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:30,448 INFO L225 Difference]: With dead ends: 921 [2024-11-18 15:17:30,448 INFO L226 Difference]: Without dead ends: 919 [2024-11-18 15:17:30,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-18 15:17:30,450 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 828 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:30,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 883 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 15:17:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-18 15:17:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 812. [2024-11-18 15:17:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 485 states have (on average 1.2536082474226804) internal successors, (608), 489 states have internal predecessors, (608), 298 states have call successors, (298), 26 states have call predecessors, (298), 28 states have return successors, (306), 296 states have call predecessors, (306), 296 states have call successors, (306) [2024-11-18 15:17:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1212 transitions. [2024-11-18 15:17:30,539 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1212 transitions. Word has length 332 [2024-11-18 15:17:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:30,540 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1212 transitions. [2024-11-18 15:17:30,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-18 15:17:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1212 transitions. [2024-11-18 15:17:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 15:17:30,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:30,544 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:30,564 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 15:17:30,745 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,SelfDestructingSolverStorable12 [2024-11-18 15:17:30,746 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:30,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:30,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2118183813, now seen corresponding path program 1 times [2024-11-18 15:17:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:30,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153491145] [2024-11-18 15:17:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3818 trivial. 0 not checked. [2024-11-18 15:17:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153491145] [2024-11-18 15:17:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153491145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86110700] [2024-11-18 15:17:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:31,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:31,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:31,227 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 15:17:31,228 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 15:17:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:31,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:17:31,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 640 proven. 4 refuted. 0 times theorem prover too weak. 3178 trivial. 0 not checked. [2024-11-18 15:17:32,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3818 trivial. 0 not checked. [2024-11-18 15:17:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86110700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:32,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:17:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108603452] [2024-11-18 15:17:32,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:32,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:17:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:17:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:32,575 INFO L87 Difference]: Start difference. First operand 812 states and 1212 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 9 states have call successors, (97), 5 states have call predecessors, (97), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) [2024-11-18 15:17:36,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:37,581 INFO L93 Difference]: Finished difference Result 1498 states and 2253 transitions. [2024-11-18 15:17:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:17:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 9 states have call successors, (97), 5 states have call predecessors, (97), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) Word has length 332 [2024-11-18 15:17:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:37,587 INFO L225 Difference]: With dead ends: 1498 [2024-11-18 15:17:37,587 INFO L226 Difference]: Without dead ends: 707 [2024-11-18 15:17:37,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:17:37,591 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 248 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 150 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:37,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1025 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 577 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-18 15:17:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-18 15:17:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 679. [2024-11-18 15:17:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 418 states have (on average 1.2870813397129186) internal successors, (538), 422 states have internal predecessors, (538), 225 states have call successors, (225), 33 states have call predecessors, (225), 35 states have return successors, (245), 223 states have call predecessors, (245), 223 states have call successors, (245) [2024-11-18 15:17:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1008 transitions. [2024-11-18 15:17:37,656 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1008 transitions. Word has length 332 [2024-11-18 15:17:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:37,656 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1008 transitions. [2024-11-18 15:17:37,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 9 states have call successors, (97), 5 states have call predecessors, (97), 6 states have return successors, (97), 7 states have call predecessors, (97), 9 states have call successors, (97) [2024-11-18 15:17:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1008 transitions. [2024-11-18 15:17:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 15:17:37,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:37,660 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:37,678 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 15:17:37,860 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,SelfDestructingSolverStorable13 [2024-11-18 15:17:37,861 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:37,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash 808771163, now seen corresponding path program 1 times [2024-11-18 15:17:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59182530] [2024-11-18 15:17:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:17:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59182530] [2024-11-18 15:17:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59182530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098838143] [2024-11-18 15:17:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:38,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:38,531 INFO L87 Difference]: Start difference. First operand 679 states and 1008 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, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-18 15:17:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:39,305 INFO L93 Difference]: Finished difference Result 985 states and 1451 transitions. [2024-11-18 15:17:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:39,306 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, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 332 [2024-11-18 15:17:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:39,309 INFO L225 Difference]: With dead ends: 985 [2024-11-18 15:17:39,309 INFO L226 Difference]: Without dead ends: 510 [2024-11-18 15:17:39,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:17:39,313 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 363 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:39,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 467 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:17:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-18 15:17:39,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 492. [2024-11-18 15:17:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 310 states have (on average 1.2741935483870968) internal successors, (395), 313 states have internal predecessors, (395), 154 states have call successors, (154), 25 states have call predecessors, (154), 27 states have return successors, (169), 153 states have call predecessors, (169), 153 states have call successors, (169) [2024-11-18 15:17:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 718 transitions. [2024-11-18 15:17:39,361 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 718 transitions. Word has length 332 [2024-11-18 15:17:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:39,362 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 718 transitions. [2024-11-18 15:17:39,362 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, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-11-18 15:17:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 718 transitions. [2024-11-18 15:17:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-18 15:17:39,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:39,364 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:39,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 15:17:39,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:39,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1985530308, now seen corresponding path program 1 times [2024-11-18 15:17:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:39,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579967659] [2024-11-18 15:17:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3824 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:17:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579967659] [2024-11-18 15:17:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579967659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:40,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:40,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 15:17:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290845022] [2024-11-18 15:17:40,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:40,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 15:17:40,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 15:17:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:40,299 INFO L87 Difference]: Start difference. First operand 492 states and 718 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 3 states have call successors, (49) [2024-11-18 15:17:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:40,739 INFO L93 Difference]: Finished difference Result 500 states and 725 transitions. [2024-11-18 15:17:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 3 states have call successors, (49) Word has length 337 [2024-11-18 15:17:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:40,742 INFO L225 Difference]: With dead ends: 500 [2024-11-18 15:17:40,742 INFO L226 Difference]: Without dead ends: 498 [2024-11-18 15:17:40,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:40,743 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 334 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:40,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1177 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:17:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-18 15:17:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2024-11-18 15:17:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 313 states have (on average 1.2715654952076678) internal successors, (398), 316 states have internal predecessors, (398), 154 states have call successors, (154), 26 states have call predecessors, (154), 28 states have return successors, (169), 153 states have call predecessors, (169), 153 states have call successors, (169) [2024-11-18 15:17:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 721 transitions. [2024-11-18 15:17:40,795 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 721 transitions. Word has length 337 [2024-11-18 15:17:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:40,795 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 721 transitions. [2024-11-18 15:17:40,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 3 states have call successors, (49) [2024-11-18 15:17:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 721 transitions. [2024-11-18 15:17:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 15:17:40,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:40,798 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:40,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 15:17:40,798 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:40,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 969508925, now seen corresponding path program 1 times [2024-11-18 15:17:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855308018] [2024-11-18 15:17:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:40,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3830 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2024-11-18 15:17:42,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:42,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855308018] [2024-11-18 15:17:42,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855308018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:42,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304270557] [2024-11-18 15:17:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:42,507 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 15:17:42,508 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 15:17:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:43,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 15:17:43,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:43,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-18 15:17:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:17:45,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:17:45,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2024-11-18 15:17:46,397 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-18 15:17:46,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-18 15:18:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3830 backedges. 685 proven. 4 refuted. 0 times theorem prover too weak. 3141 trivial. 0 not checked. [2024-11-18 15:18:04,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:04,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-18 15:18:04,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31