./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:22:57,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:22:57,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:22:57,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:22:57,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:22:57,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:22:57,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:22:57,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:22:57,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:22:57,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:22:57,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:22:57,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:22:57,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:22:57,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:22:57,460 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:22:57,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:22:57,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:22:57,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:22:57,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:22:57,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:22:57,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:22:57,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:22:57,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:22:57,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:22:57,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:22:57,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:22:57,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:22:57,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:22:57,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:22:57,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:22:57,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:22:57,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:22:57,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:22:57,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:22:57,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:22:57,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:22:57,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:22:57,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:22:57,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:22:57,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:22:57,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:22:57,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:22:57,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a [2024-11-08 15:22:57,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:22:57,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:22:57,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:22:57,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:22:57,706 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:22:57,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-08 15:22:59,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:22:59,208 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:22:59,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-08 15:22:59,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f219029/8a4fc1920f8c4c9ba328591f14aee33c/FLAG4e6f0c1b6 [2024-11-08 15:22:59,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f219029/8a4fc1920f8c4c9ba328591f14aee33c [2024-11-08 15:22:59,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:22:59,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:22:59,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:22:59,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:22:59,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:22:59,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2fb820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59, skipping insertion in model container [2024-11-08 15:22:59,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:22:59,764 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-08 15:22:59,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:22:59,802 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:22:59,813 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-08 15:22:59,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:22:59,847 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:22:59,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59 WrapperNode [2024-11-08 15:22:59,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:22:59,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:22:59,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:22:59,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:22:59,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,877 INFO L138 Inliner]: procedures = 16, calls = 71, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2024-11-08 15:22:59,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:22:59,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:22:59,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:22:59,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:22:59,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,907 INFO L175 MemorySlicer]: Split 38 memory accesses to 7 slices as follows [2, 7, 5, 6, 6, 6, 6]. 18 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 1, 2, 2, 2, 2, 2]. [2024-11-08 15:22:59,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:22:59,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:22:59,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:22:59,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:22:59,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (1/1) ... [2024-11-08 15:22:59,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:22:59,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:22:59,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 15:22:59,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 15:23:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_13_0 [2024-11-08 15:23:00,032 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_13_0 [2024-11-08 15:23:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:23:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-11-08 15:23:00,032 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-11-08 15:23:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_11_to_12_0 [2024-11-08 15:23:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_11_to_12_0 [2024-11-08 15:23:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 15:23:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 15:23:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_14_to_16_0 [2024-11-08 15:23:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_14_to_16_0 [2024-11-08 15:23:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_10_to_11_0 [2024-11-08 15:23:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_10_to_11_0 [2024-11-08 15:23:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 15:23:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 15:23:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 15:23:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 15:23:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 15:23:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 15:23:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 15:23:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 15:23:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:23:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:23:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 15:23:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 15:23:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 15:23:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 15:23:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 15:23:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 15:23:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 15:23:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 15:23:00,179 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:23:00,181 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:23:00,386 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-08 15:23:00,386 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:23:00,399 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:23:00,400 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 15:23:00,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:23:00 BoogieIcfgContainer [2024-11-08 15:23:00,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:23:00,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:23:00,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:23:00,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:23:00,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:22:59" (1/3) ... [2024-11-08 15:23:00,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ed03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:23:00, skipping insertion in model container [2024-11-08 15:23:00,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:22:59" (2/3) ... [2024-11-08 15:23:00,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ed03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:23:00, skipping insertion in model container [2024-11-08 15:23:00,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:23:00" (3/3) ... [2024-11-08 15:23:00,411 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_deep-nested.c [2024-11-08 15:23:00,424 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:23:00,424 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 15:23:00,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:23:00,487 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;@3456b296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:23:00,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 15:23:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 15:23:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 15:23:00,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:00,502 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] [2024-11-08 15:23:00,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1592718110, now seen corresponding path program 1 times [2024-11-08 15:23:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:00,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615620827] [2024-11-08 15:23:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615620827] [2024-11-08 15:23:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615620827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:23:00,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:23:00,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 15:23:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899233308] [2024-11-08 15:23:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:23:00,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 15:23:00,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 15:23:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 15:23:00,958 INFO L87 Difference]: Start difference. First operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:00,994 INFO L93 Difference]: Finished difference Result 102 states and 140 transitions. [2024-11-08 15:23:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 15:23:00,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 15:23:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:01,002 INFO L225 Difference]: With dead ends: 102 [2024-11-08 15:23:01,002 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 15:23:01,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 15:23:01,008 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:01,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 175 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:23:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 15:23:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-08 15:23:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 15:23:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-08 15:23:01,036 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 26 [2024-11-08 15:23:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:01,037 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-08 15:23:01,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-08 15:23:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 15:23:01,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:01,039 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] [2024-11-08 15:23:01,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:23:01,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:01,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1590871068, now seen corresponding path program 1 times [2024-11-08 15:23:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723523126] [2024-11-08 15:23:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:01,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723523126] [2024-11-08 15:23:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723523126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:23:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:23:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:23:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655261174] [2024-11-08 15:23:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:23:01,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:23:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:23:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:23:01,190 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:01,235 INFO L93 Difference]: Finished difference Result 94 states and 128 transitions. [2024-11-08 15:23:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:23:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 15:23:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:01,239 INFO L225 Difference]: With dead ends: 94 [2024-11-08 15:23:01,239 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 15:23:01,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:23:01,241 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:01,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:23:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 15:23:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 15:23:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 15:23:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-08 15:23:01,249 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 26 [2024-11-08 15:23:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:01,250 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-08 15:23:01,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-08 15:23:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 15:23:01,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:01,251 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] [2024-11-08 15:23:01,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 15:23:01,252 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:01,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash 927241824, now seen corresponding path program 1 times [2024-11-08 15:23:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096745365] [2024-11-08 15:23:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:02,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096745365] [2024-11-08 15:23:02,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096745365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:23:02,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:23:02,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 15:23:02,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612646665] [2024-11-08 15:23:02,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:23:02,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 15:23:02,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 15:23:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-08 15:23:02,163 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:02,477 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-08 15:23:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 15:23:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 15:23:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:02,480 INFO L225 Difference]: With dead ends: 72 [2024-11-08 15:23:02,480 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 15:23:02,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-08 15:23:02,481 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 55 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:02,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 388 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:23:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 15:23:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2024-11-08 15:23:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 50 states have internal predecessors, (59), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-08 15:23:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2024-11-08 15:23:02,491 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 26 [2024-11-08 15:23:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:02,491 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2024-11-08 15:23:02,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2024-11-08 15:23:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 15:23:02,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:02,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:02,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 15:23:02,493 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:02,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2114196936, now seen corresponding path program 1 times [2024-11-08 15:23:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:02,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8448547] [2024-11-08 15:23:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:03,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8448547] [2024-11-08 15:23:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8448547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844912484] [2024-11-08 15:23:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:03,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:03,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:03,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:03,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 15:23:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:03,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-08 15:23:03,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:03,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:03,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:03,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 15:23:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:03,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:04,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-08 15:23:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844912484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:23:04,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:23:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 41 [2024-11-08 15:23:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340313198] [2024-11-08 15:23:04,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 15:23:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 15:23:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 15:23:04,671 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 41 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 30 states have internal predecessors, (80), 12 states have call successors, (14), 12 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:07,908 INFO L93 Difference]: Finished difference Result 314 states and 428 transitions. [2024-11-08 15:23:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-08 15:23:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 30 states have internal predecessors, (80), 12 states have call successors, (14), 12 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 15:23:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:07,911 INFO L225 Difference]: With dead ends: 314 [2024-11-08 15:23:07,912 INFO L226 Difference]: Without dead ends: 256 [2024-11-08 15:23:07,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1012, Invalid=10544, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 15:23:07,917 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 455 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:07,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1094 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 15:23:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-08 15:23:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 195. [2024-11-08 15:23:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.3161290322580645) internal successors, (204), 169 states have internal predecessors, (204), 20 states have call successors, (20), 18 states have call predecessors, (20), 19 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-08 15:23:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2024-11-08 15:23:07,938 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 38 [2024-11-08 15:23:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:07,939 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2024-11-08 15:23:07,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 30 states have internal predecessors, (80), 12 states have call successors, (14), 12 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2024-11-08 15:23:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 15:23:07,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:07,941 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:07,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 15:23:08,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:08,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:08,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1161812761, now seen corresponding path program 1 times [2024-11-08 15:23:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595834779] [2024-11-08 15:23:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:09,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:09,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 15:23:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:23:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595834779] [2024-11-08 15:23:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595834779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518294278] [2024-11-08 15:23:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:09,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:09,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:09,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 15:23:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:09,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-08 15:23:09,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:09,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:09,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 15:23:09,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 15:23:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518294278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:23:09,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 15:23:09,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 32 [2024-11-08 15:23:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445170948] [2024-11-08 15:23:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:23:09,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 15:23:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 15:23:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2024-11-08 15:23:09,982 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:23:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:10,469 INFO L93 Difference]: Finished difference Result 454 states and 600 transitions. [2024-11-08 15:23:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 15:23:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-08 15:23:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:10,472 INFO L225 Difference]: With dead ends: 454 [2024-11-08 15:23:10,472 INFO L226 Difference]: Without dead ends: 258 [2024-11-08 15:23:10,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 15:23:10,474 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:10,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 137 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 15:23:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-08 15:23:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-08 15:23:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 201 states have (on average 1.3034825870646767) internal successors, (262), 216 states have internal predecessors, (262), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (38), 18 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-08 15:23:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 323 transitions. [2024-11-08 15:23:10,494 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 323 transitions. Word has length 56 [2024-11-08 15:23:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:10,494 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 323 transitions. [2024-11-08 15:23:10,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:23:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 323 transitions. [2024-11-08 15:23:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:23:10,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:10,496 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:10,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 15:23:10,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:10,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:10,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1492141984, now seen corresponding path program 1 times [2024-11-08 15:23:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:10,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228092874] [2024-11-08 15:23:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:23:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 15:23:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 15:23:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:23:11,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:11,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228092874] [2024-11-08 15:23:11,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228092874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884423955] [2024-11-08 15:23:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:11,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:11,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:11,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 15:23:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:11,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-08 15:23:11,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:11,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:11,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:11,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 15:23:12,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:12,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 15:23:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 15:23:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884423955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:23:13,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:23:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 44 [2024-11-08 15:23:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706669135] [2024-11-08 15:23:13,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:13,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 15:23:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 15:23:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 15:23:13,427 INFO L87 Difference]: Start difference. First operand 248 states and 323 transitions. Second operand has 44 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 19 states have call successors, (26), 15 states have call predecessors, (26), 9 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-08 15:23:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:17,735 INFO L93 Difference]: Finished difference Result 648 states and 865 transitions. [2024-11-08 15:23:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-08 15:23:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 19 states have call successors, (26), 15 states have call predecessors, (26), 9 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) Word has length 67 [2024-11-08 15:23:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:17,740 INFO L225 Difference]: With dead ends: 648 [2024-11-08 15:23:17,740 INFO L226 Difference]: Without dead ends: 387 [2024-11-08 15:23:17,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=917, Invalid=10425, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 15:23:17,743 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 384 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:17,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 483 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 15:23:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-08 15:23:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 359. [2024-11-08 15:23:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 289 states have (on average 1.2975778546712802) internal successors, (375), 306 states have internal predecessors, (375), 31 states have call successors, (31), 27 states have call predecessors, (31), 38 states have return successors, (60), 26 states have call predecessors, (60), 27 states have call successors, (60) [2024-11-08 15:23:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 466 transitions. [2024-11-08 15:23:17,778 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 466 transitions. Word has length 67 [2024-11-08 15:23:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:17,778 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 466 transitions. [2024-11-08 15:23:17,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 19 states have call successors, (26), 15 states have call predecessors, (26), 9 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-08 15:23:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 466 transitions. [2024-11-08 15:23:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 15:23:17,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:17,780 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:17,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 15:23:17,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:17,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:17,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 950234112, now seen corresponding path program 2 times [2024-11-08 15:23:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:17,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618301278] [2024-11-08 15:23:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618301278] [2024-11-08 15:23:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618301278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477657835] [2024-11-08 15:23:19,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:23:19,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:19,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:19,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 15:23:19,556 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:23:19,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:23:19,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-08 15:23:19,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:19,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:19,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:19,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 15:23:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-08 15:23:19,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-08 15:23:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477657835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:23:20,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:23:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 44 [2024-11-08 15:23:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55275208] [2024-11-08 15:23:20,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 15:23:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 15:23:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1789, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 15:23:20,342 INFO L87 Difference]: Start difference. First operand 359 states and 466 transitions. Second operand has 44 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 30 states have internal predecessors, (119), 18 states have call successors, (20), 16 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:23,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:23,690 INFO L93 Difference]: Finished difference Result 1110 states and 1472 transitions. [2024-11-08 15:23:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-08 15:23:23,691 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 30 states have internal predecessors, (119), 18 states have call successors, (20), 16 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-08 15:23:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:23,694 INFO L225 Difference]: With dead ends: 1110 [2024-11-08 15:23:23,694 INFO L226 Difference]: Without dead ends: 754 [2024-11-08 15:23:23,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2777 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=791, Invalid=12091, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 15:23:23,701 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 411 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:23,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1560 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 15:23:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-08 15:23:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 692. [2024-11-08 15:23:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 567 states have (on average 1.2804232804232805) internal successors, (726), 600 states have internal predecessors, (726), 52 states have call successors, (52), 48 states have call predecessors, (52), 72 states have return successors, (113), 44 states have call predecessors, (113), 47 states have call successors, (113) [2024-11-08 15:23:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 891 transitions. [2024-11-08 15:23:23,764 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 891 transitions. Word has length 74 [2024-11-08 15:23:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:23,764 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 891 transitions. [2024-11-08 15:23:23,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 30 states have internal predecessors, (119), 18 states have call successors, (20), 16 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 891 transitions. [2024-11-08 15:23:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 15:23:23,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:23,769 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:23,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 15:23:23,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:23,970 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:23,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1888413378, now seen corresponding path program 1 times [2024-11-08 15:23:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:23,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373775419] [2024-11-08 15:23:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:24,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 15:23:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 15:23:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373775419] [2024-11-08 15:23:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373775419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:23:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:23:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 15:23:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107156546] [2024-11-08 15:23:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:23:24,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 15:23:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 15:23:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-08 15:23:24,734 INFO L87 Difference]: Start difference. First operand 692 states and 891 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 15:23:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:25,081 INFO L93 Difference]: Finished difference Result 867 states and 1107 transitions. [2024-11-08 15:23:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 15:23:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2024-11-08 15:23:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:25,084 INFO L225 Difference]: With dead ends: 867 [2024-11-08 15:23:25,084 INFO L226 Difference]: Without dead ends: 615 [2024-11-08 15:23:25,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-11-08 15:23:25,085 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 71 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:25,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 333 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:23:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-08 15:23:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 609. [2024-11-08 15:23:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 502 states have (on average 1.2749003984063745) internal successors, (640), 529 states have internal predecessors, (640), 43 states have call successors, (43), 42 states have call predecessors, (43), 63 states have return successors, (93), 38 states have call predecessors, (93), 41 states have call successors, (93) [2024-11-08 15:23:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 776 transitions. [2024-11-08 15:23:25,120 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 776 transitions. Word has length 83 [2024-11-08 15:23:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:25,120 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 776 transitions. [2024-11-08 15:23:25,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 15:23:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 776 transitions. [2024-11-08 15:23:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 15:23:25,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:25,121 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:25,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 15:23:25,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:25,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:25,122 INFO L85 PathProgramCache]: Analyzing trace with hash 882078034, now seen corresponding path program 1 times [2024-11-08 15:23:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:25,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828842310] [2024-11-08 15:23:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 5 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:23:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828842310] [2024-11-08 15:23:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828842310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445616551] [2024-11-08 15:23:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:26,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:26,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:26,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:26,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 15:23:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:27,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-11-08 15:23:27,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:27,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:27,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:27,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:27,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 15:23:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 15:23:28,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:28,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-08 15:23:28,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-08 15:23:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 45 proven. 25 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 15:23:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445616551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:23:29,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:23:29,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 18] total 59 [2024-11-08 15:23:29,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460899939] [2024-11-08 15:23:29,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 15:23:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 15:23:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3259, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 15:23:29,171 INFO L87 Difference]: Start difference. First operand 609 states and 776 transitions. Second operand has 59 states, 52 states have (on average 2.769230769230769) internal successors, (144), 42 states have internal predecessors, (144), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:41,369 INFO L93 Difference]: Finished difference Result 1553 states and 2013 transitions. [2024-11-08 15:23:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-11-08 15:23:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 52 states have (on average 2.769230769230769) internal successors, (144), 42 states have internal predecessors, (144), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-08 15:23:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:41,373 INFO L225 Difference]: With dead ends: 1553 [2024-11-08 15:23:41,374 INFO L226 Difference]: Without dead ends: 947 [2024-11-08 15:23:41,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20728 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4290, Invalid=59972, Unknown=0, NotChecked=0, Total=64262 [2024-11-08 15:23:41,382 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 1004 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 5495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:41,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 2459 Invalid, 5495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 15:23:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2024-11-08 15:23:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 843. [2024-11-08 15:23:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 694 states have (on average 1.2478386167146973) internal successors, (866), 734 states have internal predecessors, (866), 61 states have call successors, (61), 57 states have call predecessors, (61), 87 states have return successors, (132), 56 states have call predecessors, (132), 59 states have call successors, (132) [2024-11-08 15:23:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1059 transitions. [2024-11-08 15:23:41,438 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1059 transitions. Word has length 86 [2024-11-08 15:23:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:41,439 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1059 transitions. [2024-11-08 15:23:41,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 52 states have (on average 2.769230769230769) internal successors, (144), 42 states have internal predecessors, (144), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:23:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1059 transitions. [2024-11-08 15:23:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 15:23:41,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:41,442 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:41,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 15:23:41,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:41,643 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:41,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:41,643 INFO L85 PathProgramCache]: Analyzing trace with hash 319940536, now seen corresponding path program 1 times [2024-11-08 15:23:41,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:41,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050516862] [2024-11-08 15:23:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:41,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:42,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:42,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:23:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 15:23:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:23:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 15:23:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 15:23:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 105 proven. 52 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 15:23:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050516862] [2024-11-08 15:23:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050516862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229721513] [2024-11-08 15:23:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:43,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:43,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:43,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 15:23:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:43,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-08 15:23:43,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:43,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:43,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:43,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-08 15:23:44,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-08 15:23:44,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 151 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 15:23:44,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:44,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 15:23:45,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-08 15:23:46,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229721513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:46,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 15:23:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 37 [2024-11-08 15:23:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741996148] [2024-11-08 15:23:46,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:46,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 15:23:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 15:23:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2559, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 15:23:46,021 INFO L87 Difference]: Start difference. First operand 843 states and 1059 transitions. Second operand has 37 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 16 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (16), 10 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:23:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:23:48,078 INFO L93 Difference]: Finished difference Result 1761 states and 2288 transitions. [2024-11-08 15:23:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 15:23:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 16 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (16), 10 states have call predecessors, (16), 13 states have call successors, (16) Word has length 120 [2024-11-08 15:23:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:23:48,083 INFO L225 Difference]: With dead ends: 1761 [2024-11-08 15:23:48,084 INFO L226 Difference]: Without dead ends: 867 [2024-11-08 15:23:48,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=656, Invalid=6316, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 15:23:48,087 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 154 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 15:23:48,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 327 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 15:23:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-08 15:23:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 853. [2024-11-08 15:23:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 703 states have (on average 1.2275960170697013) internal successors, (863), 727 states have internal predecessors, (863), 65 states have call successors, (65), 61 states have call predecessors, (65), 84 states have return successors, (163), 65 states have call predecessors, (163), 63 states have call successors, (163) [2024-11-08 15:23:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1091 transitions. [2024-11-08 15:23:48,179 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1091 transitions. Word has length 120 [2024-11-08 15:23:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:23:48,180 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1091 transitions. [2024-11-08 15:23:48,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 29 states have internal predecessors, (113), 16 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (16), 10 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:23:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1091 transitions. [2024-11-08 15:23:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-08 15:23:48,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:23:48,182 INFO L215 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 11, 11, 11, 10, 10, 10, 9, 8, 7, 7, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:23:48,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 15:23:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:48,387 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:23:48,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:23:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2060004330, now seen corresponding path program 2 times [2024-11-08 15:23:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:23:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969325463] [2024-11-08 15:23:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:23:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:23:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:50,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:51,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:23:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:51,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 15:23:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:23:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 15:23:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-08 15:23:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:23:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:23:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 257 proven. 298 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-08 15:23:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:23:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969325463] [2024-11-08 15:23:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969325463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753081826] [2024-11-08 15:23:52,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:23:52,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:23:52,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:23:52,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:23:52,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 15:23:53,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:23:53,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:23:53,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-11-08 15:23:53,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:23:53,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:53,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:53,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:23:54,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 15:23:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 566 proven. 101 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-08 15:23:54,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:23:54,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-08 15:23:54,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-08 15:23:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753081826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:23:55,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 15:23:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2024-11-08 15:23:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939943637] [2024-11-08 15:23:55,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 15:23:55,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 15:23:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:23:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 15:23:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3734, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 15:23:55,981 INFO L87 Difference]: Start difference. First operand 853 states and 1091 transitions. Second operand has 45 states, 36 states have (on average 4.027777777777778) internal successors, (145), 36 states have internal predecessors, (145), 21 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (21), 12 states have call predecessors, (21), 16 states have call successors, (21) [2024-11-08 15:24:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:24:08,359 INFO L93 Difference]: Finished difference Result 3223 states and 5116 transitions. [2024-11-08 15:24:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-11-08 15:24:08,360 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 4.027777777777778) internal successors, (145), 36 states have internal predecessors, (145), 21 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (21), 12 states have call predecessors, (21), 16 states have call successors, (21) Word has length 204 [2024-11-08 15:24:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:24:08,373 INFO L225 Difference]: With dead ends: 3223 [2024-11-08 15:24:08,374 INFO L226 Difference]: Without dead ends: 2020 [2024-11-08 15:24:08,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11946 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=2758, Invalid=39062, Unknown=0, NotChecked=0, Total=41820 [2024-11-08 15:24:08,382 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 573 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 5740 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 5967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 5740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 15:24:08,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 617 Invalid, 5967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 5740 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 15:24:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2024-11-08 15:24:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1772. [2024-11-08 15:24:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1428 states have (on average 1.227591036414566) internal successors, (1753), 1486 states have internal predecessors, (1753), 153 states have call successors, (153), 118 states have call predecessors, (153), 190 states have return successors, (620), 171 states have call predecessors, (620), 143 states have call successors, (620) [2024-11-08 15:24:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2526 transitions. [2024-11-08 15:24:08,619 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2526 transitions. Word has length 204 [2024-11-08 15:24:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:24:08,621 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2526 transitions. [2024-11-08 15:24:08,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 36 states have (on average 4.027777777777778) internal successors, (145), 36 states have internal predecessors, (145), 21 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (21), 12 states have call predecessors, (21), 16 states have call successors, (21) [2024-11-08 15:24:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2526 transitions. [2024-11-08 15:24:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-08 15:24:08,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:24:08,625 INFO L215 NwaCegarLoop]: trace histogram [16, 14, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 9, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:24:08,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 15:24:08,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:24:08,830 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:24:08,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:24:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2126879170, now seen corresponding path program 3 times [2024-11-08 15:24:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:24:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959986105] [2024-11-08 15:24:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:24:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:11,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:12,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:24:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:13,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:13,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 15:24:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:24:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 15:24:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-08 15:24:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 15:24:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 330 proven. 461 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-08 15:24:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:24:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959986105] [2024-11-08 15:24:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959986105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:24:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140175244] [2024-11-08 15:24:14,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 15:24:14,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:24:14,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:24:14,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:24:14,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 15:24:15,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 15:24:15,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:24:15,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-08 15:24:15,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:24:15,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 15:24:15,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 15:24:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 260 proven. 24 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-08 15:24:15,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:24:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2024-11-08 15:24:16,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140175244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:24:16,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:24:16,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 8] total 53 [2024-11-08 15:24:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30981240] [2024-11-08 15:24:16,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:24:16,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 15:24:16,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:24:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 15:24:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 15:24:16,401 INFO L87 Difference]: Start difference. First operand 1772 states and 2526 transitions. Second operand has 53 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 42 states have internal predecessors, (176), 19 states have call successors, (40), 14 states have call predecessors, (40), 8 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17)