./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_FNV_test6-1.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_FNV_test6-1.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 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:45:44,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:45:44,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:45:44,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:45:44,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:45:44,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:45:44,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:45:44,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:45:44,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:45:44,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:45:44,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:45:44,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:45:44,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:45:44,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:45:44,459 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:45:44,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:45:44,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:45:44,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:45:44,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:45:44,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:45:44,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:45:44,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:45:44,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:45:44,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:45:44,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:45:44,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:45:44,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:45:44,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:45:44,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:45:44,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:45:44,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:45:44,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:45:44,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:45:44,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:45:44,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:45:44,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:45:44,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:45:44,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:45:44,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:45:44,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:45:44,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:45:44,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:45:44,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2024-10-24 14:45:44,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:45:44,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:45:44,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:45:44,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:45:44,787 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:45:44,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-10-24 14:45:46,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:45:46,608 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:45:46,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-10-24 14:45:46,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f900c7b11/73efd59c8a014c9e8765c4c0b105a3bd/FLAG80bf580ac [2024-10-24 14:45:46,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f900c7b11/73efd59c8a014c9e8765c4c0b105a3bd [2024-10-24 14:45:46,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:45:46,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:45:46,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:45:46,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:45:46,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:45:46,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:45:46" (1/1) ... [2024-10-24 14:45:46,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f9eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:46, skipping insertion in model container [2024-10-24 14:45:46,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:45:46" (1/1) ... [2024-10-24 14:45:46,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:45:47,187 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_FNV_test6-1.i[44118,44131] [2024-10-24 14:45:47,201 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_FNV_test6-1.i[44660,44673] [2024-10-24 14:45:47,326 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_FNV_test6-1.i[56247,56260] [2024-10-24 14:45:47,327 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_FNV_test6-1.i[56368,56381] [2024-10-24 14:45:47,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:45:47,359 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:45:47,406 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_FNV_test6-1.i[44118,44131] [2024-10-24 14:45:47,410 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_FNV_test6-1.i[44660,44673] [2024-10-24 14:45:47,496 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_FNV_test6-1.i[56247,56260] [2024-10-24 14:45:47,497 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_FNV_test6-1.i[56368,56381] [2024-10-24 14:45:47,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:45:47,585 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:45:47,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47 WrapperNode [2024-10-24 14:45:47,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:45:47,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:45:47,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:45:47,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:45:47,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,704 INFO L138 Inliner]: procedures = 282, calls = 286, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1468 [2024-10-24 14:45:47,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:45:47,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:45:47,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:45:47,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:45:47,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,829 INFO L175 MemorySlicer]: Split 259 memory accesses to 4 slices as follows [2, 34, 3, 220]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 55 writes are split as follows [0, 4, 2, 49]. [2024-10-24 14:45:47,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:47,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:48,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:45:48,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:45:48,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:45:48,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:45:48,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (1/1) ... [2024-10-24 14:45:48,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:45:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:45:48,059 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 14:45:48,062 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 14:45:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:45:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:45:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:45:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:45:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 14:45:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:45:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-10-24 14:45:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-10-24 14:45:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:45:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:45:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:45:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 14:45:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:45:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:45:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:45:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-10-24 14:45:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-10-24 14:45:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-10-24 14:45:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:45:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 14:45:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:45:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:45:48,344 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:45:48,347 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:45:49,825 INFO L? ?]: Removed 333 outVars from TransFormulas that were not future-live. [2024-10-24 14:45:49,825 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:45:49,889 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:45:49,890 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:45:49,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:45:49 BoogieIcfgContainer [2024-10-24 14:45:49,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:45:49,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:45:49,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:45:49,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:45:49,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:45:46" (1/3) ... [2024-10-24 14:45:49,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5507a247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:45:49, skipping insertion in model container [2024-10-24 14:45:49,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:47" (2/3) ... [2024-10-24 14:45:49,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5507a247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:45:49, skipping insertion in model container [2024-10-24 14:45:49,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:45:49" (3/3) ... [2024-10-24 14:45:49,898 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-1.i [2024-10-24 14:45:49,915 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:45:49,915 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 14:45:50,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:45:50,009 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;@53193d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:45:50,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 14:45:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 14:45:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 14:45:50,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:50,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:45:50,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:50,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash 141968546, now seen corresponding path program 1 times [2024-10-24 14:45:50,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:50,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719669371] [2024-10-24 14:45:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:50,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:50,246 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 14:45:50,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:50,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719669371] [2024-10-24 14:45:50,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719669371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:50,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:45:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921637416] [2024-10-24 14:45:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:50,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:45:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:45:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:45:50,296 INFO L87 Difference]: Start difference. First operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:45:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:50,414 INFO L93 Difference]: Finished difference Result 845 states and 1360 transitions. [2024-10-24 14:45:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:45:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-24 14:45:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:50,433 INFO L225 Difference]: With dead ends: 845 [2024-10-24 14:45:50,434 INFO L226 Difference]: Without dead ends: 420 [2024-10-24 14:45:50,440 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 14:45:50,446 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:50,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:45:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-24 14:45:50,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-10-24 14:45:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 399 states have (on average 1.443609022556391) internal successors, (576), 404 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 601 transitions. [2024-10-24 14:45:50,534 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 601 transitions. Word has length 7 [2024-10-24 14:45:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:50,536 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 601 transitions. [2024-10-24 14:45:50,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:45:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 601 transitions. [2024-10-24 14:45:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:45:50,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:50,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:45:50,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:45:50,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash 750725892, now seen corresponding path program 1 times [2024-10-24 14:45:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672391956] [2024-10-24 14:45:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:50,762 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 14:45:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672391956] [2024-10-24 14:45:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672391956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:45:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259724270] [2024-10-24 14:45:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:50,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:45:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:45:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:45:50,770 INFO L87 Difference]: Start difference. First operand 420 states and 601 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:45:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:50,990 INFO L93 Difference]: Finished difference Result 1027 states and 1478 transitions. [2024-10-24 14:45:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:45:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-24 14:45:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:50,995 INFO L225 Difference]: With dead ends: 1027 [2024-10-24 14:45:50,996 INFO L226 Difference]: Without dead ends: 818 [2024-10-24 14:45:50,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:45:50,999 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 554 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:51,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1826 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:45:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-24 14:45:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 422. [2024-10-24 14:45:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4413965087281795) internal successors, (578), 406 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 603 transitions. [2024-10-24 14:45:51,047 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 603 transitions. Word has length 9 [2024-10-24 14:45:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:51,048 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 603 transitions. [2024-10-24 14:45:51,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:45:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 603 transitions. [2024-10-24 14:45:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:45:51,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:51,053 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] [2024-10-24 14:45:51,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:45:51,053 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:51,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash 992376086, now seen corresponding path program 1 times [2024-10-24 14:45:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33858919] [2024-10-24 14:45:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:51,380 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 14:45:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:51,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33858919] [2024-10-24 14:45:51,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33858919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:51,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:51,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:45:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878717922] [2024-10-24 14:45:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:51,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:45:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:45:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:45:51,385 INFO L87 Difference]: Start difference. First operand 422 states and 603 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:51,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:51,524 INFO L93 Difference]: Finished difference Result 844 states and 1206 transitions. [2024-10-24 14:45:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:45:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:45:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:51,528 INFO L225 Difference]: With dead ends: 844 [2024-10-24 14:45:51,529 INFO L226 Difference]: Without dead ends: 425 [2024-10-24 14:45:51,531 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 14:45:51,533 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 106 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:51,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1607 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:45:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-24 14:45:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-10-24 14:45:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4239401496259352) internal successors, (571), 406 states have internal predecessors, (571), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 596 transitions. [2024-10-24 14:45:51,553 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 596 transitions. Word has length 64 [2024-10-24 14:45:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:51,555 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 596 transitions. [2024-10-24 14:45:51,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 596 transitions. [2024-10-24 14:45:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:45:51,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:51,557 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] [2024-10-24 14:45:51,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:45:51,558 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:51,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash 696880968, now seen corresponding path program 1 times [2024-10-24 14:45:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:51,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649200787] [2024-10-24 14:45:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:51,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:51,720 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 14:45:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:51,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649200787] [2024-10-24 14:45:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649200787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:45:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303730562] [2024-10-24 14:45:51,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:51,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:45:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:51,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:45:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:45:51,726 INFO L87 Difference]: Start difference. First operand 422 states and 596 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:51,822 INFO L93 Difference]: Finished difference Result 793 states and 1114 transitions. [2024-10-24 14:45:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:45:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:45:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:51,826 INFO L225 Difference]: With dead ends: 793 [2024-10-24 14:45:51,827 INFO L226 Difference]: Without dead ends: 374 [2024-10-24 14:45:51,828 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 14:45:51,829 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 9 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:51,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:45:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-10-24 14:45:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-10-24 14:45:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 353 states have (on average 1.3909348441926346) internal successors, (491), 358 states have internal predecessors, (491), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 516 transitions. [2024-10-24 14:45:51,845 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 516 transitions. Word has length 64 [2024-10-24 14:45:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:51,847 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 516 transitions. [2024-10-24 14:45:51,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 516 transitions. [2024-10-24 14:45:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:45:51,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:51,850 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] [2024-10-24 14:45:51,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:45:51,850 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:51,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2068688266, now seen corresponding path program 1 times [2024-10-24 14:45:51,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:51,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075633968] [2024-10-24 14:45:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:51,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:52,270 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 14:45:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075633968] [2024-10-24 14:45:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075633968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:45:52,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348295772] [2024-10-24 14:45:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:52,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:45:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:45:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:45:52,275 INFO L87 Difference]: Start difference. First operand 374 states and 516 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:52,691 INFO L93 Difference]: Finished difference Result 750 states and 1037 transitions. [2024-10-24 14:45:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:45:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 14:45:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:52,695 INFO L225 Difference]: With dead ends: 750 [2024-10-24 14:45:52,695 INFO L226 Difference]: Without dead ends: 379 [2024-10-24 14:45:52,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:45:52,697 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 10 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:52,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2171 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:45:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-24 14:45:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2024-10-24 14:45:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.388732394366197) internal successors, (493), 360 states have internal predecessors, (493), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 518 transitions. [2024-10-24 14:45:52,716 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 518 transitions. Word has length 64 [2024-10-24 14:45:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:52,716 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 518 transitions. [2024-10-24 14:45:52,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 518 transitions. [2024-10-24 14:45:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:45:52,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:52,721 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 14:45:52,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:45:52,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:52,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -437125107, now seen corresponding path program 1 times [2024-10-24 14:45:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509313197] [2024-10-24 14:45:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:53,056 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 14:45:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:53,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509313197] [2024-10-24 14:45:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509313197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:53,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:45:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516787656] [2024-10-24 14:45:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:53,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:45:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:45:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:45:53,059 INFO L87 Difference]: Start difference. First operand 376 states and 518 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:53,199 INFO L93 Difference]: Finished difference Result 749 states and 1033 transitions. [2024-10-24 14:45:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:45:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 14:45:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:53,201 INFO L225 Difference]: With dead ends: 749 [2024-10-24 14:45:53,202 INFO L226 Difference]: Without dead ends: 376 [2024-10-24 14:45:53,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:45:53,203 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 13 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:53,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1368 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:45:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-24 14:45:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-24 14:45:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.3859154929577464) internal successors, (492), 360 states have internal predecessors, (492), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 517 transitions. [2024-10-24 14:45:53,214 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 517 transitions. Word has length 65 [2024-10-24 14:45:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:53,215 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 517 transitions. [2024-10-24 14:45:53,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 517 transitions. [2024-10-24 14:45:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:45:53,216 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:53,216 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 14:45:53,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:45:53,217 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:53,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2023236473, now seen corresponding path program 1 times [2024-10-24 14:45:53,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972452769] [2024-10-24 14:45:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:53,538 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 14:45:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972452769] [2024-10-24 14:45:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972452769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:45:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445614569] [2024-10-24 14:45:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:45:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:45:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:45:53,543 INFO L87 Difference]: Start difference. First operand 376 states and 517 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:53,906 INFO L93 Difference]: Finished difference Result 754 states and 1039 transitions. [2024-10-24 14:45:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:45:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 14:45:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:53,909 INFO L225 Difference]: With dead ends: 754 [2024-10-24 14:45:53,909 INFO L226 Difference]: Without dead ends: 381 [2024-10-24 14:45:53,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 14:45:53,911 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 10 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:53,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2605 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:45:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-24 14:45:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2024-10-24 14:45:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 359 states have (on average 1.384401114206128) internal successors, (497), 364 states have internal predecessors, (497), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 522 transitions. [2024-10-24 14:45:53,923 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 522 transitions. Word has length 65 [2024-10-24 14:45:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:53,924 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 522 transitions. [2024-10-24 14:45:53,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 522 transitions. [2024-10-24 14:45:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:45:53,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:53,926 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, 1] [2024-10-24 14:45:53,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:45:53,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:53,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 946071343, now seen corresponding path program 1 times [2024-10-24 14:45:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:53,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119851975] [2024-10-24 14:45:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:54,150 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 14:45:54,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:54,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119851975] [2024-10-24 14:45:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119851975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:54,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:45:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129613676] [2024-10-24 14:45:54,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:54,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:45:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:45:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:45:54,153 INFO L87 Difference]: Start difference. First operand 380 states and 522 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:54,372 INFO L93 Difference]: Finished difference Result 760 states and 1046 transitions. [2024-10-24 14:45:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:45:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:45:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:54,375 INFO L225 Difference]: With dead ends: 760 [2024-10-24 14:45:54,376 INFO L226 Difference]: Without dead ends: 383 [2024-10-24 14:45:54,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:45:54,377 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 4 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:54,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1788 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:45:54,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-24 14:45:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-10-24 14:45:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.3812154696132597) internal successors, (500), 367 states have internal predecessors, (500), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 525 transitions. [2024-10-24 14:45:54,389 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 525 transitions. Word has length 66 [2024-10-24 14:45:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:54,389 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 525 transitions. [2024-10-24 14:45:54,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 525 transitions. [2024-10-24 14:45:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:45:54,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:54,393 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, 1] [2024-10-24 14:45:54,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:45:54,394 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:54,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1827898922, now seen corresponding path program 1 times [2024-10-24 14:45:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938119269] [2024-10-24 14:45:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:54,788 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 14:45:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938119269] [2024-10-24 14:45:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938119269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:54,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:45:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391221343] [2024-10-24 14:45:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:54,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:45:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:45:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:45:54,792 INFO L87 Difference]: Start difference. First operand 383 states and 525 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:55,294 INFO L93 Difference]: Finished difference Result 776 states and 1068 transitions. [2024-10-24 14:45:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:45:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:45:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:55,297 INFO L225 Difference]: With dead ends: 776 [2024-10-24 14:45:55,297 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:45:55,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:45:55,299 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 30 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:55,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3520 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:45:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:45:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2024-10-24 14:45:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 372 states have (on average 1.381720430107527) internal successors, (514), 377 states have internal predecessors, (514), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 539 transitions. [2024-10-24 14:45:55,311 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 539 transitions. Word has length 66 [2024-10-24 14:45:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:55,311 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 539 transitions. [2024-10-24 14:45:55,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 539 transitions. [2024-10-24 14:45:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:45:55,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:55,312 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, 1] [2024-10-24 14:45:55,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:45:55,313 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:55,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -215227921, now seen corresponding path program 1 times [2024-10-24 14:45:55,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:55,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047350641] [2024-10-24 14:45:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:55,787 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 14:45:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047350641] [2024-10-24 14:45:55,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047350641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:55,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:55,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:45:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126683951] [2024-10-24 14:45:55,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:55,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:45:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:45:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:45:55,789 INFO L87 Difference]: Start difference. First operand 393 states and 539 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:56,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:56,244 INFO L93 Difference]: Finished difference Result 786 states and 1080 transitions. [2024-10-24 14:45:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:45:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 14:45:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:56,247 INFO L225 Difference]: With dead ends: 786 [2024-10-24 14:45:56,247 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:45:56,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:45:56,249 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 23 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:56,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3083 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:45:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:45:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-10-24 14:45:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:45:56,261 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 66 [2024-10-24 14:45:56,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:56,261 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:45:56,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:45:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:45:56,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:56,262 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, 1, 1] [2024-10-24 14:45:56,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:45:56,263 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:56,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1927888144, now seen corresponding path program 1 times [2024-10-24 14:45:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359289214] [2024-10-24 14:45:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:56,583 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 14:45:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359289214] [2024-10-24 14:45:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359289214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:56,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:45:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402730010] [2024-10-24 14:45:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:45:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:45:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:45:56,585 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:56,964 INFO L93 Difference]: Finished difference Result 794 states and 1089 transitions. [2024-10-24 14:45:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:45:56,965 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:45:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:56,968 INFO L225 Difference]: With dead ends: 794 [2024-10-24 14:45:56,968 INFO L226 Difference]: Without dead ends: 401 [2024-10-24 14:45:56,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:45:56,969 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 9 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:56,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2611 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:45:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-10-24 14:45:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-10-24 14:45:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:45:56,981 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 67 [2024-10-24 14:45:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:56,981 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:45:56,982 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:45:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:45:56,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:56,982 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, 1, 1] [2024-10-24 14:45:56,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:45:56,983 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:56,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1191157692, now seen corresponding path program 1 times [2024-10-24 14:45:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:56,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633859597] [2024-10-24 14:45:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:57,489 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 14:45:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633859597] [2024-10-24 14:45:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633859597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:45:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459984342] [2024-10-24 14:45:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:57,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:45:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:45:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:45:57,492 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:58,429 INFO L93 Difference]: Finished difference Result 1144 states and 1578 transitions. [2024-10-24 14:45:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:45:58,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:45:58,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:58,433 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:45:58,433 INFO L226 Difference]: Without dead ends: 751 [2024-10-24 14:45:58,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:45:58,435 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 598 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:58,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2935 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:45:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-10-24 14:45:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 427. [2024-10-24 14:45:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 406 states have (on average 1.3497536945812807) internal successors, (548), 411 states have internal predecessors, (548), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 573 transitions. [2024-10-24 14:45:58,452 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 573 transitions. Word has length 67 [2024-10-24 14:45:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:58,452 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 573 transitions. [2024-10-24 14:45:58,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 573 transitions. [2024-10-24 14:45:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:45:58,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:58,453 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, 1, 1, 1] [2024-10-24 14:45:58,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:45:58,454 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:58,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1668996667, now seen corresponding path program 1 times [2024-10-24 14:45:58,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:58,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952636062] [2024-10-24 14:45:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:58,726 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 14:45:58,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:58,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952636062] [2024-10-24 14:45:58,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952636062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:58,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:58,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:45:58,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002832934] [2024-10-24 14:45:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:58,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:45:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:45:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:45:58,729 INFO L87 Difference]: Start difference. First operand 427 states and 573 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:59,076 INFO L93 Difference]: Finished difference Result 830 states and 1126 transitions. [2024-10-24 14:45:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:45:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 14:45:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:59,081 INFO L225 Difference]: With dead ends: 830 [2024-10-24 14:45:59,081 INFO L226 Difference]: Without dead ends: 437 [2024-10-24 14:45:59,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:45:59,083 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 16 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:59,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3105 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:45:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-10-24 14:45:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2024-10-24 14:45:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:45:59,099 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:45:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:59,099 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:45:59,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:45:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:45:59,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:59,101 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, 1, 1, 1] [2024-10-24 14:45:59,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 14:45:59,101 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:59,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash -488729825, now seen corresponding path program 1 times [2024-10-24 14:45:59,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:59,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400289497] [2024-10-24 14:45:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:45:59,406 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 14:45:59,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:45:59,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400289497] [2024-10-24 14:45:59,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400289497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:45:59,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:45:59,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:45:59,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690593535] [2024-10-24 14:45:59,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:45:59,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:45:59,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:45:59,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:45:59,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:45:59,408 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:45:59,939 INFO L93 Difference]: Finished difference Result 836 states and 1134 transitions. [2024-10-24 14:45:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:45:59,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 14:45:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:45:59,942 INFO L225 Difference]: With dead ends: 836 [2024-10-24 14:45:59,942 INFO L226 Difference]: Without dead ends: 440 [2024-10-24 14:45:59,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:45:59,944 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 26 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:45:59,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3456 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:45:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-10-24 14:45:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 430. [2024-10-24 14:45:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:45:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:45:59,958 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:45:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:45:59,958 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:45:59,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:45:59,959 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:45:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:45:59,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:45:59,959 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, 1, 1, 1, 1] [2024-10-24 14:45:59,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:45:59,960 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:45:59,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:45:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -29765440, now seen corresponding path program 1 times [2024-10-24 14:45:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:45:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941452478] [2024-10-24 14:45:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:45:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:45:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:00,295 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 14:46:00,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941452478] [2024-10-24 14:46:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941452478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:00,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:46:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122782810] [2024-10-24 14:46:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:00,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:46:00,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:46:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:00,299 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:00,843 INFO L93 Difference]: Finished difference Result 842 states and 1143 transitions. [2024-10-24 14:46:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:46:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:00,847 INFO L225 Difference]: With dead ends: 842 [2024-10-24 14:46:00,847 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:46:00,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:46:00,849 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 22 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:00,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3511 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:46:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:46:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2024-10-24 14:46:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 419 states have (on average 1.3460620525059666) internal successors, (564), 424 states have internal predecessors, (564), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 589 transitions. [2024-10-24 14:46:00,871 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 589 transitions. Word has length 69 [2024-10-24 14:46:00,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:00,871 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 589 transitions. [2024-10-24 14:46:00,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 589 transitions. [2024-10-24 14:46:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:46:00,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:00,873 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, 1, 1, 1, 1] [2024-10-24 14:46:00,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 14:46:00,874 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:00,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1800190044, now seen corresponding path program 1 times [2024-10-24 14:46:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579271150] [2024-10-24 14:46:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:01,208 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 14:46:01,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:01,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579271150] [2024-10-24 14:46:01,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579271150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:01,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:46:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147098441] [2024-10-24 14:46:01,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:01,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:46:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:46:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:01,211 INFO L87 Difference]: Start difference. First operand 440 states and 589 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:01,728 INFO L93 Difference]: Finished difference Result 862 states and 1167 transitions. [2024-10-24 14:46:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:01,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:46:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:01,732 INFO L225 Difference]: With dead ends: 862 [2024-10-24 14:46:01,732 INFO L226 Difference]: Without dead ends: 456 [2024-10-24 14:46:01,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:01,733 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 13 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:01,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3919 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:46:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-10-24 14:46:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2024-10-24 14:46:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3459715639810426) internal successors, (568), 427 states have internal predecessors, (568), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 593 transitions. [2024-10-24 14:46:01,751 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 593 transitions. Word has length 69 [2024-10-24 14:46:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:01,751 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 593 transitions. [2024-10-24 14:46:01,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 593 transitions. [2024-10-24 14:46:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:46:01,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:01,752 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, 1, 1, 1, 1] [2024-10-24 14:46:01,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:46:01,753 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:01,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash 302137308, now seen corresponding path program 1 times [2024-10-24 14:46:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021189722] [2024-10-24 14:46:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:02,168 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 14:46:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021189722] [2024-10-24 14:46:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021189722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:46:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271009545] [2024-10-24 14:46:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:02,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:46:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:46:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:46:02,171 INFO L87 Difference]: Start difference. First operand 443 states and 593 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:02,515 INFO L93 Difference]: Finished difference Result 857 states and 1157 transitions. [2024-10-24 14:46:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:46:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:46:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:02,518 INFO L225 Difference]: With dead ends: 857 [2024-10-24 14:46:02,519 INFO L226 Difference]: Without dead ends: 448 [2024-10-24 14:46:02,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 14:46:02,521 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 7 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:02,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2635 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:46:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-10-24 14:46:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2024-10-24 14:46:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3436018957345972) internal successors, (567), 427 states have internal predecessors, (567), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 592 transitions. [2024-10-24 14:46:02,535 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 592 transitions. Word has length 69 [2024-10-24 14:46:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:02,535 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 592 transitions. [2024-10-24 14:46:02,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 592 transitions. [2024-10-24 14:46:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:46:02,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:02,538 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, 1, 1, 1, 1] [2024-10-24 14:46:02,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 14:46:02,538 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:02,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1914808309, now seen corresponding path program 1 times [2024-10-24 14:46:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985053382] [2024-10-24 14:46:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:02,800 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 14:46:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985053382] [2024-10-24 14:46:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985053382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:46:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789716350] [2024-10-24 14:46:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:02,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:46:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:46:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:46:02,803 INFO L87 Difference]: Start difference. First operand 443 states and 592 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:03,156 INFO L93 Difference]: Finished difference Result 855 states and 1155 transitions. [2024-10-24 14:46:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:46:03,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 14:46:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:03,159 INFO L225 Difference]: With dead ends: 855 [2024-10-24 14:46:03,160 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:46:03,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 14:46:03,161 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 4 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:03,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2594 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:46:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:46:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-10-24 14:46:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 425 states have (on average 1.3411764705882352) internal successors, (570), 430 states have internal predecessors, (570), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 595 transitions. [2024-10-24 14:46:03,175 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 595 transitions. Word has length 69 [2024-10-24 14:46:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:03,175 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 595 transitions. [2024-10-24 14:46:03,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 595 transitions. [2024-10-24 14:46:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:46:03,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:03,177 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, 1, 1, 1, 1, 1] [2024-10-24 14:46:03,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:46:03,177 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:03,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash 48213054, now seen corresponding path program 1 times [2024-10-24 14:46:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703709537] [2024-10-24 14:46:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:03,614 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 14:46:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703709537] [2024-10-24 14:46:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703709537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:46:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575416214] [2024-10-24 14:46:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:46:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:46:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:03,616 INFO L87 Difference]: Start difference. First operand 446 states and 595 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:07,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:46:08,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:08,236 INFO L93 Difference]: Finished difference Result 870 states and 1174 transitions. [2024-10-24 14:46:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:46:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:08,239 INFO L225 Difference]: With dead ends: 870 [2024-10-24 14:46:08,240 INFO L226 Difference]: Without dead ends: 458 [2024-10-24 14:46:08,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:08,242 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 9 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:08,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3903 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-10-24 14:46:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-10-24 14:46:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 450. [2024-10-24 14:46:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.3403263403263403) internal successors, (575), 434 states have internal predecessors, (575), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 600 transitions. [2024-10-24 14:46:08,256 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 600 transitions. Word has length 70 [2024-10-24 14:46:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:08,257 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 600 transitions. [2024-10-24 14:46:08,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 600 transitions. [2024-10-24 14:46:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:46:08,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:08,259 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, 1, 1, 1, 1, 1] [2024-10-24 14:46:08,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 14:46:08,259 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:08,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1976786731, now seen corresponding path program 1 times [2024-10-24 14:46:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:08,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394883886] [2024-10-24 14:46:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:08,628 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 14:46:08,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:08,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394883886] [2024-10-24 14:46:08,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394883886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:08,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:08,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:46:08,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484110329] [2024-10-24 14:46:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:08,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:46:08,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:08,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:46:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:46:08,631 INFO L87 Difference]: Start difference. First operand 450 states and 600 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:09,209 INFO L93 Difference]: Finished difference Result 879 states and 1184 transitions. [2024-10-24 14:46:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:46:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:09,213 INFO L225 Difference]: With dead ends: 879 [2024-10-24 14:46:09,213 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:46:09,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:46:09,215 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 22 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:09,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4401 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:46:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:46:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 453. [2024-10-24 14:46:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 432 states have (on average 1.337962962962963) internal successors, (578), 437 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 603 transitions. [2024-10-24 14:46:09,230 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 603 transitions. Word has length 70 [2024-10-24 14:46:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:09,230 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 603 transitions. [2024-10-24 14:46:09,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 603 transitions. [2024-10-24 14:46:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:46:09,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:09,231 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, 1, 1, 1, 1, 1] [2024-10-24 14:46:09,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 14:46:09,232 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:09,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 942258210, now seen corresponding path program 1 times [2024-10-24 14:46:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973729564] [2024-10-24 14:46:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:09,811 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 14:46:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973729564] [2024-10-24 14:46:09,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973729564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:09,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:09,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:46:09,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692554614] [2024-10-24 14:46:09,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:09,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:46:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:46:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:46:09,815 INFO L87 Difference]: Start difference. First operand 453 states and 603 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:11,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:46:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:12,486 INFO L93 Difference]: Finished difference Result 878 states and 1180 transitions. [2024-10-24 14:46:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:12,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:46:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:12,491 INFO L225 Difference]: With dead ends: 878 [2024-10-24 14:46:12,491 INFO L226 Difference]: Without dead ends: 459 [2024-10-24 14:46:12,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:46:12,495 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 33 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:12,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3426 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 14:46:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-24 14:46:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 454. [2024-10-24 14:46:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 433 states have (on average 1.3371824480369514) internal successors, (579), 438 states have internal predecessors, (579), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 604 transitions. [2024-10-24 14:46:12,511 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 604 transitions. Word has length 70 [2024-10-24 14:46:12,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:12,511 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 604 transitions. [2024-10-24 14:46:12,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 604 transitions. [2024-10-24 14:46:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:46:12,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:12,513 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, 1, 1, 1, 1, 1] [2024-10-24 14:46:12,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 14:46:12,513 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:12,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash -894204710, now seen corresponding path program 1 times [2024-10-24 14:46:12,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042642229] [2024-10-24 14:46:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:12,751 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 14:46:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042642229] [2024-10-24 14:46:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042642229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:12,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:12,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:46:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091430117] [2024-10-24 14:46:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:12,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:46:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:46:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:46:12,753 INFO L87 Difference]: Start difference. First operand 454 states and 604 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:13,298 INFO L93 Difference]: Finished difference Result 883 states and 1187 transitions. [2024-10-24 14:46:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:46:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 14:46:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:13,302 INFO L225 Difference]: With dead ends: 883 [2024-10-24 14:46:13,302 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:46:13,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:46:13,304 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 22 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:13,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3456 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:46:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:46:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 451. [2024-10-24 14:46:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 430 states have (on average 1.3395348837209302) internal successors, (576), 435 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:46:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 601 transitions. [2024-10-24 14:46:13,318 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 601 transitions. Word has length 70 [2024-10-24 14:46:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:13,318 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 601 transitions. [2024-10-24 14:46:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 601 transitions. [2024-10-24 14:46:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:46:13,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:13,319 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, 1, 1, 1, 1, 1] [2024-10-24 14:46:13,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 14:46:13,320 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:46:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1497195914, now seen corresponding path program 1 times [2024-10-24 14:46:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988409013] [2024-10-24 14:46:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:22,827 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-24 14:46:58,715 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-24 14:47:11,138 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 14:47:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988409013] [2024-10-24 14:47:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988409013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:11,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:47:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959229734] [2024-10-24 14:47:11,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:11,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:47:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:47:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=82, Unknown=6, NotChecked=0, Total=110 [2024-10-24 14:47:11,140 INFO L87 Difference]: Start difference. First operand 451 states and 601 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:12,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []