./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:53:48,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:53:48,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:53:48,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:53:48,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:53:48,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:53:48,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:53:48,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:53:48,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:53:48,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:53:48,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:53:48,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:53:48,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:53:48,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:53:48,441 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:53:48,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:53:48,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:53:48,442 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:53:48,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:53:48,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:53:48,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:53:48,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:53:48,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:53:48,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:53:48,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:53:48,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:53:48,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:53:48,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:53:48,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:53:48,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:53:48,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:53:48,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:53:48,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:53:48,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:53:48,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:53:48,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:53:48,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:53:48,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:53:48,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:53:48,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:53:48,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:53:48,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:53:48,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-10-24 14:53:48,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:53:48,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:53:48,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:53:48,754 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:53:48,755 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:53:48,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2024-10-24 14:53:50,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:53:50,468 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:53:50,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i [2024-10-24 14:53:50,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4520e09d/36c1caff09754e5687430ca917bb34c6/FLAG28babf314 [2024-10-24 14:53:50,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4520e09d/36c1caff09754e5687430ca917bb34c6 [2024-10-24 14:53:50,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:53:50,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:53:50,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:53:50,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:53:50,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:53:50,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:53:50" (1/1) ... [2024-10-24 14:53:50,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2b5fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:50, skipping insertion in model container [2024-10-24 14:53:50,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:53:50" (1/1) ... [2024-10-24 14:53:50,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:53:51,243 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i[37435,37448] [2024-10-24 14:53:51,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:53:51,379 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:53:51,425 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-2.i[37435,37448] [2024-10-24 14:53:51,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:53:51,538 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:53:51,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51 WrapperNode [2024-10-24 14:53:51,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:53:51,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:53:51,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:53:51,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:53:51,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,650 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1443 [2024-10-24 14:53:51,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:53:51,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:53:51,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:53:51,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:53:51,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,773 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-10-24 14:53:51,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:53:51,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:53:51,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:53:51,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:53:51,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (1/1) ... [2024-10-24 14:53:51,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:53:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:53:51,972 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) [2024-10-24 14:53:51,974 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 [2024-10-24 14:53:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:53:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:53:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:53:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:53:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:53:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:53:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:53:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:53:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:53:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:53:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:53:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:53:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:53:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:53:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:53:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:53:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:53:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:53:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:53:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:53:52,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:53:52,273 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:53:52,274 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:53:53,641 INFO L? ?]: Removed 321 outVars from TransFormulas that were not future-live. [2024-10-24 14:53:53,641 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:53:53,692 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:53:53,692 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:53:53,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:53:53 BoogieIcfgContainer [2024-10-24 14:53:53,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:53:53,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:53:53,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:53:53,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:53:53,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:53:50" (1/3) ... [2024-10-24 14:53:53,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbabf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:53:53, skipping insertion in model container [2024-10-24 14:53:53,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:53:51" (2/3) ... [2024-10-24 14:53:53,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbabf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:53:53, skipping insertion in model container [2024-10-24 14:53:53,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:53:53" (3/3) ... [2024-10-24 14:53:53,704 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test2-2.i [2024-10-24 14:53:53,720 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:53:53,720 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:53:53,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:53:53,816 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;@90cfbd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:53:53,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:53:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 390 states have (on average 1.6282051282051282) internal successors, (635), 391 states have internal predecessors, (635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-24 14:53:53,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:53,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:53:53,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:53,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1645702792, now seen corresponding path program 1 times [2024-10-24 14:53:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961353104] [2024-10-24 14:53:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:53:54,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961353104] [2024-10-24 14:53:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961353104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:54,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:53:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109724006] [2024-10-24 14:53:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:54,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:53:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:53:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:53:54,058 INFO L87 Difference]: Start difference. First operand has 396 states, 390 states have (on average 1.6282051282051282) internal successors, (635), 391 states have internal predecessors, (635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:54,139 INFO L93 Difference]: Finished difference Result 790 states and 1279 transitions. [2024-10-24 14:53:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:53:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-24 14:53:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:54,161 INFO L225 Difference]: With dead ends: 790 [2024-10-24 14:53:54,161 INFO L226 Difference]: Without dead ends: 359 [2024-10-24 14:53:54,167 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 [2024-10-24 14:53:54,173 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:54,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:53:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-10-24 14:53:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-10-24 14:53:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 354 states have (on average 1.4576271186440677) internal successors, (516), 354 states have internal predecessors, (516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 522 transitions. [2024-10-24 14:53:54,240 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 522 transitions. Word has length 10 [2024-10-24 14:53:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:54,242 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 522 transitions. [2024-10-24 14:53:54,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 522 transitions. [2024-10-24 14:53:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:53:54,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:54,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:53:54,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:53:54,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:54,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1496970619, now seen corresponding path program 1 times [2024-10-24 14:53:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740567318] [2024-10-24 14:53:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:53:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740567318] [2024-10-24 14:53:54,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740567318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:54,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:54,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:53:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760993160] [2024-10-24 14:53:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:54,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:53:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:53:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:53:54,605 INFO L87 Difference]: Start difference. First operand 359 states and 522 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:54,735 INFO L93 Difference]: Finished difference Result 520 states and 758 transitions. [2024-10-24 14:53:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:53:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 14:53:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:54,740 INFO L225 Difference]: With dead ends: 520 [2024-10-24 14:53:54,740 INFO L226 Difference]: Without dead ends: 362 [2024-10-24 14:53:54,741 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 [2024-10-24 14:53:54,742 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 105 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:54,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1382 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:53:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-10-24 14:53:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 359. [2024-10-24 14:53:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 354 states have (on average 1.4378531073446328) internal successors, (509), 354 states have internal predecessors, (509), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 515 transitions. [2024-10-24 14:53:54,758 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 515 transitions. Word has length 65 [2024-10-24 14:53:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:54,758 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 515 transitions. [2024-10-24 14:53:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 515 transitions. [2024-10-24 14:53:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:53:54,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:54,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:53:54,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:53:54,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:54,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash 316506247, now seen corresponding path program 1 times [2024-10-24 14:53:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993595375] [2024-10-24 14:53:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:53:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993595375] [2024-10-24 14:53:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993595375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:55,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:53:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442126145] [2024-10-24 14:53:55,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:55,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:53:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:53:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:53:55,281 INFO L87 Difference]: Start difference. First operand 359 states and 515 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:55,443 INFO L93 Difference]: Finished difference Result 873 states and 1253 transitions. [2024-10-24 14:53:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:53:55,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 14:53:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:55,449 INFO L225 Difference]: With dead ends: 873 [2024-10-24 14:53:55,450 INFO L226 Difference]: Without dead ends: 712 [2024-10-24 14:53:55,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:53:55,452 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 503 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:55,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1993 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:53:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-10-24 14:53:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 361. [2024-10-24 14:53:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 356 states have (on average 1.4353932584269662) internal successors, (511), 356 states have internal predecessors, (511), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 517 transitions. [2024-10-24 14:53:55,484 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 517 transitions. Word has length 65 [2024-10-24 14:53:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:55,485 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 517 transitions. [2024-10-24 14:53:55,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 517 transitions. [2024-10-24 14:53:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 14:53:55,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:55,490 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:53:55,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:53:55,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:55,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash -640932924, now seen corresponding path program 1 times [2024-10-24 14:53:55,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:55,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235818677] [2024-10-24 14:53:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:53:55,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:55,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235818677] [2024-10-24 14:53:55,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235818677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:55,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:55,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:53:55,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48756580] [2024-10-24 14:53:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:55,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:53:55,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:53:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:53:55,821 INFO L87 Difference]: Start difference. First operand 361 states and 517 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:55,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:55,933 INFO L93 Difference]: Finished difference Result 676 states and 964 transitions. [2024-10-24 14:53:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:53:55,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-10-24 14:53:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:55,936 INFO L225 Difference]: With dead ends: 676 [2024-10-24 14:53:55,936 INFO L226 Difference]: Without dead ends: 319 [2024-10-24 14:53:55,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:53:55,938 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 30 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:55,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1213 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:53:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-24 14:53:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2024-10-24 14:53:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 314 states have (on average 1.3821656050955413) internal successors, (434), 314 states have internal predecessors, (434), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 440 transitions. [2024-10-24 14:53:55,948 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 440 transitions. Word has length 141 [2024-10-24 14:53:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:55,950 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 440 transitions. [2024-10-24 14:53:55,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 440 transitions. [2024-10-24 14:53:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 14:53:55,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:55,952 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:53:55,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:53:55,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:55,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1670755272, now seen corresponding path program 1 times [2024-10-24 14:53:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670218709] [2024-10-24 14:53:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:53:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670218709] [2024-10-24 14:53:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670218709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:56,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:53:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672680584] [2024-10-24 14:53:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:56,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:53:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:53:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:53:56,170 INFO L87 Difference]: Start difference. First operand 319 states and 440 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:56,237 INFO L93 Difference]: Finished difference Result 858 states and 1192 transitions. [2024-10-24 14:53:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:53:56,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-10-24 14:53:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:56,241 INFO L225 Difference]: With dead ends: 858 [2024-10-24 14:53:56,242 INFO L226 Difference]: Without dead ends: 543 [2024-10-24 14:53:56,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:53:56,243 INFO L432 NwaCegarLoop]: 615 mSDtfsCounter, 253 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:56,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1030 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:53:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-24 14:53:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2024-10-24 14:53:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 536 states have (on average 1.3936567164179106) internal successors, (747), 536 states have internal predecessors, (747), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 753 transitions. [2024-10-24 14:53:56,258 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 753 transitions. Word has length 141 [2024-10-24 14:53:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:56,259 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 753 transitions. [2024-10-24 14:53:56,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:53:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 753 transitions. [2024-10-24 14:53:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-24 14:53:56,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:56,263 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:53:56,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:53:56,263 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:56,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1060055901, now seen corresponding path program 1 times [2024-10-24 14:53:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808834229] [2024-10-24 14:53:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:56,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:53:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:56,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:53:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:53:56,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:56,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808834229] [2024-10-24 14:53:56,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808834229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:56,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:56,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:53:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66635669] [2024-10-24 14:53:56,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:56,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:53:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:53:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:53:56,485 INFO L87 Difference]: Start difference. First operand 541 states and 753 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:53:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:56,736 INFO L93 Difference]: Finished difference Result 1050 states and 1473 transitions. [2024-10-24 14:53:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:53:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 154 [2024-10-24 14:53:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:56,740 INFO L225 Difference]: With dead ends: 1050 [2024-10-24 14:53:56,740 INFO L226 Difference]: Without dead ends: 543 [2024-10-24 14:53:56,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:53:56,743 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 3 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:56,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1195 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:53:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-24 14:53:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2024-10-24 14:53:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 536 states have (on average 1.382462686567164) internal successors, (741), 536 states have internal predecessors, (741), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 747 transitions. [2024-10-24 14:53:56,760 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 747 transitions. Word has length 154 [2024-10-24 14:53:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:56,761 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 747 transitions. [2024-10-24 14:53:56,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:53:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 747 transitions. [2024-10-24 14:53:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-24 14:53:56,763 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:56,763 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:53:56,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:53:56,764 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:56,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 198222299, now seen corresponding path program 1 times [2024-10-24 14:53:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020177770] [2024-10-24 14:53:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:57,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:53:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:57,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:53:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:53:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020177770] [2024-10-24 14:53:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020177770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:57,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:53:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121024999] [2024-10-24 14:53:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:57,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:53:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:53:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:53:57,047 INFO L87 Difference]: Start difference. First operand 541 states and 747 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:53:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:53:57,463 INFO L93 Difference]: Finished difference Result 1072 states and 1487 transitions. [2024-10-24 14:53:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:53:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 154 [2024-10-24 14:53:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:53:57,467 INFO L225 Difference]: With dead ends: 1072 [2024-10-24 14:53:57,467 INFO L226 Difference]: Without dead ends: 622 [2024-10-24 14:53:57,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:53:57,469 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 1425 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:53:57,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 1533 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:53:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-10-24 14:53:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 406. [2024-10-24 14:53:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 401 states have (on average 1.3566084788029926) internal successors, (544), 401 states have internal predecessors, (544), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:53:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 550 transitions. [2024-10-24 14:53:57,482 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 550 transitions. Word has length 154 [2024-10-24 14:53:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:53:57,483 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 550 transitions. [2024-10-24 14:53:57,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:53:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 550 transitions. [2024-10-24 14:53:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-24 14:53:57,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:53:57,485 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:53:57,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:53:57,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:53:57,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:53:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1265546503, now seen corresponding path program 1 times [2024-10-24 14:53:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:53:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090150024] [2024-10-24 14:53:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:53:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:58,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:53:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:58,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:53:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:53:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:58,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090150024] [2024-10-24 14:53:58,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090150024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:53:58,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135057765] [2024-10-24 14:53:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:53:58,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:53:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:53:58,083 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) [2024-10-24 14:53:58,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:53:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:58,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 14:53:58,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:53:58,540 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 11 treesize of output 7 [2024-10-24 14:53:58,569 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 7 treesize of output 3 [2024-10-24 14:53:58,573 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 16 treesize of output 17 [2024-10-24 14:53:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:53:59,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:53:59,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135057765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:59,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:53:59,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-10-24 14:53:59,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507402782] [2024-10-24 14:53:59,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:59,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:53:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:53:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:53:59,522 INFO L87 Difference]: Start difference. First operand 406 states and 550 transitions. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:01,180 INFO L93 Difference]: Finished difference Result 981 states and 1350 transitions. [2024-10-24 14:54:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:54:01,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2024-10-24 14:54:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:01,184 INFO L225 Difference]: With dead ends: 981 [2024-10-24 14:54:01,184 INFO L226 Difference]: Without dead ends: 619 [2024-10-24 14:54:01,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:54:01,187 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 532 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:01,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2468 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 14:54:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-24 14:54:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 406. [2024-10-24 14:54:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 401 states have (on average 1.3541147132169575) internal successors, (543), 401 states have internal predecessors, (543), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 549 transitions. [2024-10-24 14:54:01,203 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 549 transitions. Word has length 164 [2024-10-24 14:54:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:01,204 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 549 transitions. [2024-10-24 14:54:01,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 549 transitions. [2024-10-24 14:54:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-24 14:54:01,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:01,206 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:01,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:01,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:01,407 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:01,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -127889176, now seen corresponding path program 1 times [2024-10-24 14:54:01,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:01,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546846145] [2024-10-24 14:54:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:01,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:54:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:01,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:54:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:54:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546846145] [2024-10-24 14:54:01,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546846145] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827371078] [2024-10-24 14:54:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:01,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:01,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:01,952 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) [2024-10-24 14:54:01,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:54:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:02,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 14:54:02,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:02,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827371078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:02,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:02,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-24 14:54:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101055563] [2024-10-24 14:54:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:02,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:02,406 INFO L87 Difference]: Start difference. First operand 406 states and 549 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:02,529 INFO L93 Difference]: Finished difference Result 768 states and 1051 transitions. [2024-10-24 14:54:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 165 [2024-10-24 14:54:02,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:02,531 INFO L225 Difference]: With dead ends: 768 [2024-10-24 14:54:02,531 INFO L226 Difference]: Without dead ends: 406 [2024-10-24 14:54:02,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:02,533 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 17 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:02,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1127 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:54:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-10-24 14:54:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2024-10-24 14:54:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 401 states have (on average 1.3491271820448878) internal successors, (541), 401 states have internal predecessors, (541), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 547 transitions. [2024-10-24 14:54:02,547 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 547 transitions. Word has length 165 [2024-10-24 14:54:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:02,547 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 547 transitions. [2024-10-24 14:54:02,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 547 transitions. [2024-10-24 14:54:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-24 14:54:02,549 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:02,549 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:02,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:54:02,753 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,SelfDestructingSolverStorable8 [2024-10-24 14:54:02,754 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash -834305598, now seen corresponding path program 1 times [2024-10-24 14:54:02,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:02,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145086447] [2024-10-24 14:54:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:03,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:54:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:03,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:54:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145086447] [2024-10-24 14:54:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145086447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:54:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500192114] [2024-10-24 14:54:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:03,191 INFO L87 Difference]: Start difference. First operand 406 states and 547 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:03,586 INFO L93 Difference]: Finished difference Result 773 states and 1058 transitions. [2024-10-24 14:54:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2024-10-24 14:54:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:03,590 INFO L225 Difference]: With dead ends: 773 [2024-10-24 14:54:03,590 INFO L226 Difference]: Without dead ends: 414 [2024-10-24 14:54:03,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:03,592 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 10 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:03,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1829 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:54:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-10-24 14:54:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2024-10-24 14:54:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 407 states have (on average 1.343980343980344) internal successors, (547), 407 states have internal predecessors, (547), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 553 transitions. [2024-10-24 14:54:03,608 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 553 transitions. Word has length 166 [2024-10-24 14:54:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:03,609 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 553 transitions. [2024-10-24 14:54:03,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 553 transitions. [2024-10-24 14:54:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-24 14:54:03,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:03,611 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:03,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:54:03,612 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:03,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -710180703, now seen corresponding path program 1 times [2024-10-24 14:54:03,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:03,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563652050] [2024-10-24 14:54:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:04,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:04,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563652050] [2024-10-24 14:54:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563652050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:04,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:54:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194122212] [2024-10-24 14:54:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:04,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:54:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:54:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:54:04,060 INFO L87 Difference]: Start difference. First operand 412 states and 553 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:04,517 INFO L93 Difference]: Finished difference Result 779 states and 1062 transitions. [2024-10-24 14:54:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:54:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2024-10-24 14:54:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:04,520 INFO L225 Difference]: With dead ends: 779 [2024-10-24 14:54:04,520 INFO L226 Difference]: Without dead ends: 424 [2024-10-24 14:54:04,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:54:04,521 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 14 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:04,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2474 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:54:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-10-24 14:54:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 420. [2024-10-24 14:54:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 415 states have (on average 1.342168674698795) internal successors, (557), 415 states have internal predecessors, (557), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 563 transitions. [2024-10-24 14:54:04,533 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 563 transitions. Word has length 167 [2024-10-24 14:54:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:04,533 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 563 transitions. [2024-10-24 14:54:04,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 563 transitions. [2024-10-24 14:54:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-24 14:54:04,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:04,535 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:04,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:54:04,536 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:04,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1901845637, now seen corresponding path program 1 times [2024-10-24 14:54:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024478550] [2024-10-24 14:54:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:05,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:05,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:54:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024478550] [2024-10-24 14:54:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024478550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870602087] [2024-10-24 14:54:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:05,101 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) [2024-10-24 14:54:05,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:54:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:05,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:54:05,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:05,550 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 11 treesize of output 7 [2024-10-24 14:54:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:54:06,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870602087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-24 14:54:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933248384] [2024-10-24 14:54:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:54:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:54:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:54:06,195 INFO L87 Difference]: Start difference. First operand 420 states and 563 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:07,396 INFO L93 Difference]: Finished difference Result 838 states and 1147 transitions. [2024-10-24 14:54:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:54:07,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2024-10-24 14:54:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:07,400 INFO L225 Difference]: With dead ends: 838 [2024-10-24 14:54:07,400 INFO L226 Difference]: Without dead ends: 680 [2024-10-24 14:54:07,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:54:07,401 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 472 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:07,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1965 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 14:54:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-10-24 14:54:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 451. [2024-10-24 14:54:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 446 states have internal predecessors, (593), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 599 transitions. [2024-10-24 14:54:07,420 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 599 transitions. Word has length 167 [2024-10-24 14:54:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:07,420 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 599 transitions. [2024-10-24 14:54:07,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 599 transitions. [2024-10-24 14:54:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:54:07,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:07,423 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:07,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:54:07,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:07,624 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:07,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1127942441, now seen corresponding path program 1 times [2024-10-24 14:54:07,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757015379] [2024-10-24 14:54:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:08,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:08,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:54:08,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:08,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757015379] [2024-10-24 14:54:08,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757015379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:08,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075114342] [2024-10-24 14:54:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:08,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:08,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:54:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:08,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 14:54:08,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:54:08,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075114342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:08,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:08,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-10-24 14:54:08,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722939427] [2024-10-24 14:54:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:54:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:54:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:54:08,565 INFO L87 Difference]: Start difference. First operand 451 states and 599 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:08,900 INFO L93 Difference]: Finished difference Result 644 states and 870 transitions. [2024-10-24 14:54:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:54:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-10-24 14:54:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:08,902 INFO L225 Difference]: With dead ends: 644 [2024-10-24 14:54:08,903 INFO L226 Difference]: Without dead ends: 486 [2024-10-24 14:54:08,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:54:08,904 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 34 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:08,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1730 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:54:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-24 14:54:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 478. [2024-10-24 14:54:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 473 states have (on average 1.3234672304439747) internal successors, (626), 473 states have internal predecessors, (626), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 632 transitions. [2024-10-24 14:54:08,920 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 632 transitions. Word has length 168 [2024-10-24 14:54:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:08,920 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 632 transitions. [2024-10-24 14:54:08,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 632 transitions. [2024-10-24 14:54:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-24 14:54:08,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:08,922 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:08,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:09,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:09,127 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:09,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1844126944, now seen corresponding path program 1 times [2024-10-24 14:54:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473998039] [2024-10-24 14:54:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:09,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:09,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:54:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473998039] [2024-10-24 14:54:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473998039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:54:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134629273] [2024-10-24 14:54:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:09,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:09,544 INFO L87 Difference]: Start difference. First operand 478 states and 632 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:10,093 INFO L93 Difference]: Finished difference Result 671 states and 904 transitions. [2024-10-24 14:54:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:10,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2024-10-24 14:54:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:10,096 INFO L225 Difference]: With dead ends: 671 [2024-10-24 14:54:10,096 INFO L226 Difference]: Without dead ends: 486 [2024-10-24 14:54:10,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:10,097 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 10 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:10,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1651 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:54:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-24 14:54:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 482. [2024-10-24 14:54:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 477 states have (on average 1.3228511530398324) internal successors, (631), 477 states have internal predecessors, (631), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 637 transitions. [2024-10-24 14:54:10,113 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 637 transitions. Word has length 169 [2024-10-24 14:54:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:10,113 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 637 transitions. [2024-10-24 14:54:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 637 transitions. [2024-10-24 14:54:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-24 14:54:10,115 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:10,115 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:10,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:54:10,116 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:10,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash -726089296, now seen corresponding path program 1 times [2024-10-24 14:54:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104671803] [2024-10-24 14:54:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:10,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:10,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:10,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:54:10,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104671803] [2024-10-24 14:54:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104671803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:10,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:54:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643771775] [2024-10-24 14:54:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:10,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:54:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:10,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:54:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:54:10,616 INFO L87 Difference]: Start difference. First operand 482 states and 637 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:11,399 INFO L93 Difference]: Finished difference Result 684 states and 922 transitions. [2024-10-24 14:54:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:54:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-10-24 14:54:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:11,402 INFO L225 Difference]: With dead ends: 684 [2024-10-24 14:54:11,402 INFO L226 Difference]: Without dead ends: 495 [2024-10-24 14:54:11,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:54:11,406 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 14 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:11,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2172 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:54:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-24 14:54:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 490. [2024-10-24 14:54:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.3237113402061855) internal successors, (642), 485 states have internal predecessors, (642), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 14:54:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 648 transitions. [2024-10-24 14:54:11,427 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 648 transitions. Word has length 170 [2024-10-24 14:54:11,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:11,427 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 648 transitions. [2024-10-24 14:54:11,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 648 transitions. [2024-10-24 14:54:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-24 14:54:11,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:11,430 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:11,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 14:54:11,430 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:11,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1813729940, now seen corresponding path program 1 times [2024-10-24 14:54:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654207743] [2024-10-24 14:54:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:11,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:11,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:11,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:54:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:54:11,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654207743] [2024-10-24 14:54:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654207743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262853105] [2024-10-24 14:54:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:11,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:11,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:11,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:54:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:12,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 14:54:12,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:12,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262853105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:12,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:12,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-24 14:54:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188193212] [2024-10-24 14:54:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:12,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:54:12,353 INFO L87 Difference]: Start difference. First operand 490 states and 648 transitions. Second operand has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 14:54:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:12,394 INFO L93 Difference]: Finished difference Result 881 states and 1172 transitions. [2024-10-24 14:54:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:12,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 170 [2024-10-24 14:54:12,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:12,397 INFO L225 Difference]: With dead ends: 881 [2024-10-24 14:54:12,398 INFO L226 Difference]: Without dead ends: 492 [2024-10-24 14:54:12,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:54:12,399 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 0 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:12,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1271 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:54:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-10-24 14:54:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2024-10-24 14:54:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 486 states have (on average 1.3251028806584362) internal successors, (644), 487 states have internal predecessors, (644), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 14:54:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 651 transitions. [2024-10-24 14:54:12,416 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 651 transitions. Word has length 170 [2024-10-24 14:54:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:12,416 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 651 transitions. [2024-10-24 14:54:12,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 14:54:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 651 transitions. [2024-10-24 14:54:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 14:54:12,418 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:12,419 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:12,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 14:54:12,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 14:54:12,620 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:12,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1125030372, now seen corresponding path program 1 times [2024-10-24 14:54:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045418916] [2024-10-24 14:54:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:13,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:13,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:54:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:54:13,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:13,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045418916] [2024-10-24 14:54:13,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045418916] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:13,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085177672] [2024-10-24 14:54:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:13,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:13,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:13,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 14:54:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:13,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 14:54:13,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:54:13,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:54:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:54:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085177672] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:54:13,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:54:13,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 14:54:13,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792762227] [2024-10-24 14:54:13,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:54:13,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:54:13,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:54:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:54:13,946 INFO L87 Difference]: Start difference. First operand 492 states and 651 transitions. Second operand has 11 states, 8 states have (on average 22.25) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:14,215 INFO L93 Difference]: Finished difference Result 892 states and 1191 transitions. [2024-10-24 14:54:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 14:54:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 22.25) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 14:54:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:14,219 INFO L225 Difference]: With dead ends: 892 [2024-10-24 14:54:14,219 INFO L226 Difference]: Without dead ends: 500 [2024-10-24 14:54:14,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-10-24 14:54:14,223 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 8 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:14,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3323 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:54:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-10-24 14:54:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2024-10-24 14:54:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 493 states have (on average 1.328600405679513) internal successors, (655), 494 states have internal predecessors, (655), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 14:54:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 663 transitions. [2024-10-24 14:54:14,251 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 663 transitions. Word has length 172 [2024-10-24 14:54:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:14,252 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 663 transitions. [2024-10-24 14:54:14,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 22.25) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 663 transitions. [2024-10-24 14:54:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-24 14:54:14,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:14,254 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-24 14:54:14,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 14:54:14,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 14:54:14,455 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:14,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:14,456 INFO L85 PathProgramCache]: Analyzing trace with hash -320222188, now seen corresponding path program 2 times [2024-10-24 14:54:14,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:14,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796618297] [2024-10-24 14:54:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:14,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:15,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:15,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:54:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:15,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796618297] [2024-10-24 14:54:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796618297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282203428] [2024-10-24 14:54:15,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:54:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:15,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:15,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 14:54:16,010 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:54:16,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:54:16,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 14:54:16,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 14:54:16,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282203428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:16,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-24 14:54:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327554826] [2024-10-24 14:54:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:16,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:54:16,308 INFO L87 Difference]: Start difference. First operand 500 states and 663 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:16,903 INFO L93 Difference]: Finished difference Result 704 states and 948 transitions. [2024-10-24 14:54:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-10-24 14:54:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:16,906 INFO L225 Difference]: With dead ends: 704 [2024-10-24 14:54:16,906 INFO L226 Difference]: Without dead ends: 507 [2024-10-24 14:54:16,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:54:16,907 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 12 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:16,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1832 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:54:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-10-24 14:54:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 500. [2024-10-24 14:54:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 493 states have (on average 1.328600405679513) internal successors, (655), 494 states have internal predecessors, (655), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 14:54:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 663 transitions. [2024-10-24 14:54:16,935 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 663 transitions. Word has length 176 [2024-10-24 14:54:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:16,935 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 663 transitions. [2024-10-24 14:54:16,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 663 transitions. [2024-10-24 14:54:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-24 14:54:16,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:16,938 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-24 14:54:16,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 14:54:17,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:17,139 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:17,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1649266356, now seen corresponding path program 1 times [2024-10-24 14:54:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62121702] [2024-10-24 14:54:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:17,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:17,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:54:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 14:54:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62121702] [2024-10-24 14:54:17,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62121702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:17,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:17,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:54:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335671577] [2024-10-24 14:54:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:17,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:54:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:54:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:54:17,674 INFO L87 Difference]: Start difference. First operand 500 states and 663 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:18,430 INFO L93 Difference]: Finished difference Result 710 states and 955 transitions. [2024-10-24 14:54:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:54:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-10-24 14:54:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:18,433 INFO L225 Difference]: With dead ends: 710 [2024-10-24 14:54:18,433 INFO L226 Difference]: Without dead ends: 513 [2024-10-24 14:54:18,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:54:18,434 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 22 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:18,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2867 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:54:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-10-24 14:54:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 507. [2024-10-24 14:54:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 500 states have (on average 1.328) internal successors, (664), 501 states have internal predecessors, (664), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 14:54:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 672 transitions. [2024-10-24 14:54:18,453 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 672 transitions. Word has length 177 [2024-10-24 14:54:18,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:18,454 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 672 transitions. [2024-10-24 14:54:18,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 672 transitions. [2024-10-24 14:54:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-24 14:54:18,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:18,456 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-24 14:54:18,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 14:54:18,456 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:18,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1220715952, now seen corresponding path program 1 times [2024-10-24 14:54:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:18,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49274649] [2024-10-24 14:54:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:18,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:18,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:54:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49274649] [2024-10-24 14:54:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49274649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247490106] [2024-10-24 14:54:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:18,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:18,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:18,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:18,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 14:54:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:19,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 14:54:19,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 14:54:19,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247490106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:19,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:19,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-24 14:54:19,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996768655] [2024-10-24 14:54:19,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:19,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:19,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:54:19,671 INFO L87 Difference]: Start difference. First operand 507 states and 672 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:20,062 INFO L93 Difference]: Finished difference Result 723 states and 974 transitions. [2024-10-24 14:54:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-10-24 14:54:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:20,065 INFO L225 Difference]: With dead ends: 723 [2024-10-24 14:54:20,065 INFO L226 Difference]: Without dead ends: 519 [2024-10-24 14:54:20,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:54:20,066 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 17 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:20,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1862 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:54:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-10-24 14:54:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 514. [2024-10-24 14:54:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 507 states have (on average 1.3293885601577908) internal successors, (674), 508 states have internal predecessors, (674), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 14:54:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 682 transitions. [2024-10-24 14:54:20,085 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 682 transitions. Word has length 177 [2024-10-24 14:54:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:20,085 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 682 transitions. [2024-10-24 14:54:20,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 682 transitions. [2024-10-24 14:54:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-24 14:54:20,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:20,087 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-24 14:54:20,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:20,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:20,288 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:20,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2057516092, now seen corresponding path program 1 times [2024-10-24 14:54:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425139991] [2024-10-24 14:54:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:20,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:20,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:54:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 14:54:20,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425139991] [2024-10-24 14:54:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425139991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:20,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:20,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:54:20,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485986345] [2024-10-24 14:54:20,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:20,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:54:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:54:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:54:20,884 INFO L87 Difference]: Start difference. First operand 514 states and 682 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:21,700 INFO L93 Difference]: Finished difference Result 734 states and 989 transitions. [2024-10-24 14:54:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:54:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-10-24 14:54:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:21,704 INFO L225 Difference]: With dead ends: 734 [2024-10-24 14:54:21,704 INFO L226 Difference]: Without dead ends: 523 [2024-10-24 14:54:21,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:54:21,705 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 28 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:21,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2814 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:54:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-10-24 14:54:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 517. [2024-10-24 14:54:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 510 states have (on average 1.3274509803921568) internal successors, (677), 511 states have internal predecessors, (677), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 14:54:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 685 transitions. [2024-10-24 14:54:21,723 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 685 transitions. Word has length 178 [2024-10-24 14:54:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:21,724 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 685 transitions. [2024-10-24 14:54:21,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 685 transitions. [2024-10-24 14:54:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-24 14:54:21,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:21,727 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-24 14:54:21,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 14:54:21,728 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:21,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -832654424, now seen corresponding path program 1 times [2024-10-24 14:54:21,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:21,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753535186] [2024-10-24 14:54:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:22,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:22,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:54:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:22,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753535186] [2024-10-24 14:54:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753535186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015389608] [2024-10-24 14:54:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:22,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:22,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:22,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:22,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 14:54:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:22,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:54:22,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:54:22,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:54:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015389608] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:54:23,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:54:23,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2024-10-24 14:54:23,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942073573] [2024-10-24 14:54:23,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:54:23,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 14:54:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 14:54:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:54:23,034 INFO L87 Difference]: Start difference. First operand 517 states and 685 transitions. Second operand has 15 states, 12 states have (on average 15.416666666666666) internal successors, (185), 14 states have internal predecessors, (185), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:23,380 INFO L93 Difference]: Finished difference Result 935 states and 1246 transitions. [2024-10-24 14:54:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 14:54:23,381 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 15.416666666666666) internal successors, (185), 14 states have internal predecessors, (185), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-10-24 14:54:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:23,383 INFO L225 Difference]: With dead ends: 935 [2024-10-24 14:54:23,383 INFO L226 Difference]: Without dead ends: 522 [2024-10-24 14:54:23,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:54:23,385 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 32 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:23,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3220 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:54:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-10-24 14:54:23,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 521. [2024-10-24 14:54:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 514 states have (on average 1.328793774319066) internal successors, (683), 515 states have internal predecessors, (683), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 14:54:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 690 transitions. [2024-10-24 14:54:23,403 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 690 transitions. Word has length 178 [2024-10-24 14:54:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:23,404 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 690 transitions. [2024-10-24 14:54:23,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 15.416666666666666) internal successors, (185), 14 states have internal predecessors, (185), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 690 transitions. [2024-10-24 14:54:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-24 14:54:23,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:23,406 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-10-24 14:54:23,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 14:54:23,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:23,607 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:23,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1784543400, now seen corresponding path program 2 times [2024-10-24 14:54:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:23,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162059744] [2024-10-24 14:54:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:23,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:24,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:24,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 14:54:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162059744] [2024-10-24 14:54:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162059744] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286395649] [2024-10-24 14:54:24,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:54:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:24,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 14:54:24,960 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:54:24,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:54:24,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 14:54:24,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 14:54:25,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286395649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2024-10-24 14:54:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279599281] [2024-10-24 14:54:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:25,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 14:54:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 14:54:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-10-24 14:54:25,525 INFO L87 Difference]: Start difference. First operand 521 states and 690 transitions. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:27,175 INFO L93 Difference]: Finished difference Result 740 states and 992 transitions. [2024-10-24 14:54:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 182 [2024-10-24 14:54:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:27,178 INFO L225 Difference]: With dead ends: 740 [2024-10-24 14:54:27,178 INFO L226 Difference]: Without dead ends: 526 [2024-10-24 14:54:27,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-10-24 14:54:27,179 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 11 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:27,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2974 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 14:54:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-24 14:54:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 524. [2024-10-24 14:54:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 517 states have (on average 1.3268858800773695) internal successors, (686), 518 states have internal predecessors, (686), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 14:54:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 693 transitions. [2024-10-24 14:54:27,197 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 693 transitions. Word has length 182 [2024-10-24 14:54:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:27,198 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 693 transitions. [2024-10-24 14:54:27,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 693 transitions. [2024-10-24 14:54:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-24 14:54:27,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:27,200 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-10-24 14:54:27,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:27,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-24 14:54:27,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:27,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1653245231, now seen corresponding path program 1 times [2024-10-24 14:54:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051463923] [2024-10-24 14:54:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:27,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:28,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 14:54:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 14:54:28,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051463923] [2024-10-24 14:54:28,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051463923] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250475841] [2024-10-24 14:54:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:28,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:28,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 14:54:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:28,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:54:28,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:54:28,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:54:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 9 refuted. 1 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 14:54:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250475841] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:54:33,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:54:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-10-24 14:54:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294166374] [2024-10-24 14:54:33,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:54:33,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 14:54:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 14:54:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=379, Unknown=1, NotChecked=0, Total=506 [2024-10-24 14:54:33,037 INFO L87 Difference]: Start difference. First operand 524 states and 693 transitions. Second operand has 23 states, 20 states have (on average 9.65) internal successors, (193), 22 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:33,661 INFO L93 Difference]: Finished difference Result 953 states and 1270 transitions. [2024-10-24 14:54:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 14:54:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 9.65) internal successors, (193), 22 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 182 [2024-10-24 14:54:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:33,664 INFO L225 Difference]: With dead ends: 953 [2024-10-24 14:54:33,664 INFO L226 Difference]: Without dead ends: 536 [2024-10-24 14:54:33,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=344, Invalid=915, Unknown=1, NotChecked=0, Total=1260 [2024-10-24 14:54:33,666 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 37 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:33,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3626 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:54:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-10-24 14:54:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 533. [2024-10-24 14:54:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 526 states have (on average 1.332699619771863) internal successors, (701), 527 states have internal predecessors, (701), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 14:54:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 708 transitions. [2024-10-24 14:54:33,686 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 708 transitions. Word has length 182 [2024-10-24 14:54:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:33,686 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 708 transitions. [2024-10-24 14:54:33,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 9.65) internal successors, (193), 22 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:54:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 708 transitions. [2024-10-24 14:54:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-24 14:54:33,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:33,688 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-10-24 14:54:33,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:33,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 14:54:33,889 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:33,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1993645251, now seen corresponding path program 2 times [2024-10-24 14:54:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599378783] [2024-10-24 14:54:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:34,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:34,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 14:54:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 133 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-10-24 14:54:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599378783] [2024-10-24 14:54:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599378783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389352330] [2024-10-24 14:54:34,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:54:34,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:34,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:34,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:34,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 14:54:35,340 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:54:35,340 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:54:35,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:54:35,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-10-24 14:54:35,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:35,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389352330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:35,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:35,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-10-24 14:54:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112507530] [2024-10-24 14:54:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:35,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:35,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:54:35,623 INFO L87 Difference]: Start difference. First operand 533 states and 708 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:36,195 INFO L93 Difference]: Finished difference Result 755 states and 1015 transitions. [2024-10-24 14:54:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:54:36,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 191 [2024-10-24 14:54:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:36,199 INFO L225 Difference]: With dead ends: 755 [2024-10-24 14:54:36,199 INFO L226 Difference]: Without dead ends: 538 [2024-10-24 14:54:36,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:54:36,202 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 10 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:36,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1832 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:54:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-10-24 14:54:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 533. [2024-10-24 14:54:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 526 states have (on average 1.332699619771863) internal successors, (701), 527 states have internal predecessors, (701), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 14:54:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 708 transitions. [2024-10-24 14:54:36,226 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 708 transitions. Word has length 191 [2024-10-24 14:54:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:36,231 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 708 transitions. [2024-10-24 14:54:36,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 708 transitions. [2024-10-24 14:54:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-24 14:54:36,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:36,233 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-10-24 14:54:36,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 14:54:36,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 14:54:36,434 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:36,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1089243293, now seen corresponding path program 1 times [2024-10-24 14:54:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438191430] [2024-10-24 14:54:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:37,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:54:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:37,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 14:54:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 133 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-10-24 14:54:37,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438191430] [2024-10-24 14:54:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438191430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929713603] [2024-10-24 14:54:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:37,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:37,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:37,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 14:54:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:38,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 201 conjuncts are in the unsatisfiable core [2024-10-24 14:54:38,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:38,157 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 11 treesize of output 7 [2024-10-24 14:54:38,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-24 14:54:38,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-10-24 14:54:38,705 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 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:54:38,806 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 15 treesize of output 1 [2024-10-24 14:54:38,824 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-10-24 14:54:38,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-10-24 14:54:38,831 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 11 treesize of output 7 [2024-10-24 14:54:38,915 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 18 treesize of output 10 [2024-10-24 14:54:38,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:54:39,150 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-24 14:54:39,150 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-10-24 14:54:39,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-10-24 14:54:43,283 INFO L224 Elim1Store]: Index analysis took 201 ms