./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:01:48,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:01:49,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:01:49,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:01:49,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:01:49,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:01:49,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:01:49,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:01:49,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:01:49,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:01:49,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:01:49,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:01:49,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:01:49,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:01:49,099 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:01:49,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:01:49,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:01:49,100 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:01:49,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:01:49,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:01:49,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:01:49,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:01:49,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:01:49,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:01:49,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:01:49,102 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:01:49,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:01:49,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:01:49,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:01:49,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:01:49,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:01:49,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:01:49,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:01:49,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:01:49,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:49,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:01:49,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:01:49,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:01:49,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:01:49,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:01:49,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:01:49,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:01:49,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:01:49,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:01:49,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc [2024-10-13 14:01:49,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:01:49,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:01:49,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:01:49,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:01:49,419 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:01:49,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-10-13 14:01:50,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:01:51,120 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:01:51,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-10-13 14:01:51,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b6e981a/453eb1af066d42098fbe990d5459d80b/FLAGf14f1f399 [2024-10-13 14:01:51,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b6e981a/453eb1af066d42098fbe990d5459d80b [2024-10-13 14:01:51,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:01:51,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:01:51,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:51,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:01:51,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:01:51,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e67b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51, skipping insertion in model container [2024-10-13 14:01:51,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:01:51,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:51,424 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:01:51,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:51,481 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:01:51,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51 WrapperNode [2024-10-13 14:01:51,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:51,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:51,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:01:51,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:01:51,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,530 INFO L138 Inliner]: procedures = 16, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2024-10-13 14:01:51,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:51,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:01:51,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:01:51,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:01:51,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,566 INFO L175 MemorySlicer]: Split 66 memory accesses to 9 slices as follows [2, 8, 10, 8, 7, 7, 8, 8, 8]. 15 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 2, 2, 2, 1, 1, 2, 2, 2]. [2024-10-13 14:01:51,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:01:51,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:01:51,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:01:51,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:01:51,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (1/1) ... [2024-10-13 14:01:51,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:51,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 14:01:51,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 14:01:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:01:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2024-10-13 14:01:51,696 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2024-10-13 14:01:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 14:01:51,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 14:01:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:01:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:01:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:01:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:01:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:01:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 14:01:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:01:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:01:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:01:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:01:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 14:01:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 14:01:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-13 14:01:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-13 14:01:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:01:51,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:01:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:01:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:01:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:01:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:01:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:01:51,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:01:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:01:51,844 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:01:51,847 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:01:52,756 INFO L? ?]: Removed 165 outVars from TransFormulas that were not future-live. [2024-10-13 14:01:52,757 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:01:52,801 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:01:52,801 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 14:01:52,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:52 BoogieIcfgContainer [2024-10-13 14:01:52,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:01:52,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:01:52,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:01:52,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:01:52,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:51" (1/3) ... [2024-10-13 14:01:52,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368083b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:52, skipping insertion in model container [2024-10-13 14:01:52,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:51" (2/3) ... [2024-10-13 14:01:52,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368083b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:52, skipping insertion in model container [2024-10-13 14:01:52,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:52" (3/3) ... [2024-10-13 14:01:52,811 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd-ll.c [2024-10-13 14:01:52,826 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:01:52,826 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-10-13 14:01:52,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:01:52,906 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;@77ef63a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:01:52,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-10-13 14:01:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-13 14:01:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 14:01:52,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:52,919 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:52,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:52,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:52,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1447836937, now seen corresponding path program 1 times [2024-10-13 14:01:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:52,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85716516] [2024-10-13 14:01:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:53,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:01:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:53,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85716516] [2024-10-13 14:01:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85716516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:53,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 14:01:53,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121114454] [2024-10-13 14:01:53,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:53,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 14:01:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 14:01:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 14:01:53,332 INFO L87 Difference]: Start difference. First operand has 149 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:53,390 INFO L93 Difference]: Finished difference Result 296 states and 330 transitions. [2024-10-13 14:01:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 14:01:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-10-13 14:01:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:53,403 INFO L225 Difference]: With dead ends: 296 [2024-10-13 14:01:53,403 INFO L226 Difference]: Without dead ends: 146 [2024-10-13 14:01:53,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 14:01:53,414 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:53,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:01:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-13 14:01:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-10-13 14:01:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 133 states have internal predecessors, (134), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-13 14:01:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2024-10-13 14:01:53,468 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 17 [2024-10-13 14:01:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:53,469 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2024-10-13 14:01:53,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2024-10-13 14:01:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 14:01:53,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:53,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:53,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:01:53,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:53,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1026666483, now seen corresponding path program 1 times [2024-10-13 14:01:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:53,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854071195] [2024-10-13 14:01:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:53,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969481390] [2024-10-13 14:01:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:53,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:53,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:53,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:53,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 14:01:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:53,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 14:01:53,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:53,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:53,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:01:53,852 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 15 treesize of output 7 [2024-10-13 14:01:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:53,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:53,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854071195] [2024-10-13 14:01:53,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:53,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969481390] [2024-10-13 14:01:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969481390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:53,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:53,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779608860] [2024-10-13 14:01:53,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:53,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:53,874 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:54,136 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2024-10-13 14:01:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:01:54,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-10-13 14:01:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:54,142 INFO L225 Difference]: With dead ends: 243 [2024-10-13 14:01:54,142 INFO L226 Difference]: Without dead ends: 242 [2024-10-13 14:01:54,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:54,147 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 159 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:54,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 650 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:01:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-10-13 14:01:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2024-10-13 14:01:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7352941176470589) internal successors, (177), 158 states have internal predecessors, (177), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-10-13 14:01:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2024-10-13 14:01:54,168 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 17 [2024-10-13 14:01:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:54,168 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2024-10-13 14:01:54,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2024-10-13 14:01:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-13 14:01:54,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:54,169 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:54,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 14:01:54,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:54,371 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:54,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:54,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1761889938, now seen corresponding path program 1 times [2024-10-13 14:01:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:54,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429424654] [2024-10-13 14:01:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:54,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475978595] [2024-10-13 14:01:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:54,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:54,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:54,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 14:01:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:54,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 14:01:54,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:54,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:54,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:54,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429424654] [2024-10-13 14:01:54,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475978595] [2024-10-13 14:01:54,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475978595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:54,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684919636] [2024-10-13 14:01:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:54,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:54,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:54,694 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:54,947 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2024-10-13 14:01:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:01:54,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-10-13 14:01:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:54,949 INFO L225 Difference]: With dead ends: 242 [2024-10-13 14:01:54,949 INFO L226 Difference]: Without dead ends: 241 [2024-10-13 14:01:54,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:54,950 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 156 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:54,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 652 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:01:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-10-13 14:01:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 175. [2024-10-13 14:01:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 158 states have internal predecessors, (176), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-10-13 14:01:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-10-13 14:01:54,965 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 18 [2024-10-13 14:01:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:54,965 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-10-13 14:01:54,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-10-13 14:01:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 14:01:54,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:54,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:54,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 14:01:55,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 14:01:55,167 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1215986731, now seen corresponding path program 1 times [2024-10-13 14:01:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881890732] [2024-10-13 14:01:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540372904] [2024-10-13 14:01:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:55,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:55,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:55,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 14:01:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:55,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:01:55,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:55,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:55,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881890732] [2024-10-13 14:01:55,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540372904] [2024-10-13 14:01:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540372904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:55,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797540055] [2024-10-13 14:01:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:55,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:55,418 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:55,662 INFO L93 Difference]: Finished difference Result 275 states and 312 transitions. [2024-10-13 14:01:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:01:55,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-10-13 14:01:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:55,665 INFO L225 Difference]: With dead ends: 275 [2024-10-13 14:01:55,666 INFO L226 Difference]: Without dead ends: 273 [2024-10-13 14:01:55,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:55,667 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 158 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:55,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 669 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:01:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-13 14:01:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 214. [2024-10-13 14:01:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.711111111111111) internal successors, (231), 192 states have internal predecessors, (231), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-10-13 14:01:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 269 transitions. [2024-10-13 14:01:55,700 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 269 transitions. Word has length 19 [2024-10-13 14:01:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:55,700 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 269 transitions. [2024-10-13 14:01:55,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 269 transitions. [2024-10-13 14:01:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:01:55,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:55,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:55,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 14:01:55,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:55,910 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:55,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash -332142665, now seen corresponding path program 1 times [2024-10-13 14:01:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:55,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140274703] [2024-10-13 14:01:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:55,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486740161] [2024-10-13 14:01:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:55,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:55,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:55,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 14:01:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:56,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 14:01:56,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:56,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:56,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140274703] [2024-10-13 14:01:56,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486740161] [2024-10-13 14:01:56,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486740161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:56,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:56,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:01:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296987180] [2024-10-13 14:01:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:56,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:01:56,198 INFO L87 Difference]: Start difference. First operand 214 states and 269 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:56,574 INFO L93 Difference]: Finished difference Result 333 states and 403 transitions. [2024-10-13 14:01:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:56,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-13 14:01:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:56,577 INFO L225 Difference]: With dead ends: 333 [2024-10-13 14:01:56,577 INFO L226 Difference]: Without dead ends: 330 [2024-10-13 14:01:56,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:01:56,578 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 168 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:56,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 714 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:01:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-13 14:01:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 254. [2024-10-13 14:01:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 169 states have (on average 1.7041420118343196) internal successors, (288), 227 states have internal predecessors, (288), 21 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2024-10-13 14:01:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 337 transitions. [2024-10-13 14:01:56,606 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 337 transitions. Word has length 21 [2024-10-13 14:01:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:56,607 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 337 transitions. [2024-10-13 14:01:56,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 337 transitions. [2024-10-13 14:01:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 14:01:56,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:56,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:56,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 14:01:56,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:56,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_48_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:56,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1706487978, now seen corresponding path program 1 times [2024-10-13 14:01:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:56,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914445228] [2024-10-13 14:01:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:56,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371266778] [2024-10-13 14:01:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:56,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:56,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:56,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:56,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 14:01:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:56,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 14:01:56,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:57,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:57,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914445228] [2024-10-13 14:01:57,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371266778] [2024-10-13 14:01:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371266778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:57,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553530527] [2024-10-13 14:01:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:57,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:57,157 INFO L87 Difference]: Start difference. First operand 254 states and 337 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:57,591 INFO L93 Difference]: Finished difference Result 319 states and 388 transitions. [2024-10-13 14:01:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:01:57,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-10-13 14:01:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:57,593 INFO L225 Difference]: With dead ends: 319 [2024-10-13 14:01:57,593 INFO L226 Difference]: Without dead ends: 318 [2024-10-13 14:01:57,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:57,594 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 153 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:57,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 663 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:01:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-13 14:01:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 254. [2024-10-13 14:01:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 169 states have (on average 1.6923076923076923) internal successors, (286), 227 states have internal predecessors, (286), 21 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2024-10-13 14:01:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 335 transitions. [2024-10-13 14:01:57,606 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 335 transitions. Word has length 22 [2024-10-13 14:01:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:57,607 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 335 transitions. [2024-10-13 14:01:57,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:01:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 335 transitions. [2024-10-13 14:01:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-13 14:01:57,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:57,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:57,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 14:01:57,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:57,809 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:57,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:57,809 INFO L85 PathProgramCache]: Analyzing trace with hash 660832390, now seen corresponding path program 1 times [2024-10-13 14:01:57,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136672439] [2024-10-13 14:01:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:57,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338163999] [2024-10-13 14:01:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:57,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:57,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:57,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:57,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 14:01:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:57,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:01:57,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:57,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:58,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136672439] [2024-10-13 14:01:58,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338163999] [2024-10-13 14:01:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338163999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:58,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:58,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:01:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716728224] [2024-10-13 14:01:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:01:58,080 INFO L87 Difference]: Start difference. First operand 254 states and 335 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:01:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:58,306 INFO L93 Difference]: Finished difference Result 383 states and 453 transitions. [2024-10-13 14:01:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-13 14:01:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:58,309 INFO L225 Difference]: With dead ends: 383 [2024-10-13 14:01:58,311 INFO L226 Difference]: Without dead ends: 381 [2024-10-13 14:01:58,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:01:58,312 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 240 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:58,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 707 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:01:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-13 14:01:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 282. [2024-10-13 14:01:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.6787564766839378) internal successors, (324), 251 states have internal predecessors, (324), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-13 14:01:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 379 transitions. [2024-10-13 14:01:58,327 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 379 transitions. Word has length 29 [2024-10-13 14:01:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:58,327 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 379 transitions. [2024-10-13 14:01:58,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:01:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 379 transitions. [2024-10-13 14:01:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-13 14:01:58,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:58,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:58,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 14:01:58,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:58,529 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:01:58,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash -595231384, now seen corresponding path program 1 times [2024-10-13 14:01:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315794477] [2024-10-13 14:01:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:58,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046704366] [2024-10-13 14:01:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:58,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:58,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 14:01:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:58,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 14:01:58,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:58,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:01:58,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:01:58,948 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 15 treesize of output 7 [2024-10-13 14:01:58,953 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 15 treesize of output 7 [2024-10-13 14:01:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:58,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:01:59,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315794477] [2024-10-13 14:01:59,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046704366] [2024-10-13 14:01:59,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046704366] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:59,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:59,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:01:59,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151765995] [2024-10-13 14:01:59,108 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:01:59,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 14:01:59,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 14:01:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:01:59,109 INFO L87 Difference]: Start difference. First operand 282 states and 379 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:03,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:07,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:11,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:15,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:19,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:23,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:23,677 INFO L93 Difference]: Finished difference Result 383 states and 448 transitions. [2024-10-13 14:02:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 14:02:23,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-10-13 14:02:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:23,680 INFO L225 Difference]: With dead ends: 383 [2024-10-13 14:02:23,680 INFO L226 Difference]: Without dead ends: 382 [2024-10-13 14:02:23,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:02:23,683 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 394 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:23,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1201 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 347 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2024-10-13 14:02:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-13 14:02:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 286. [2024-10-13 14:02:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6581632653061225) internal successors, (325), 254 states have internal predecessors, (325), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-13 14:02:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 380 transitions. [2024-10-13 14:02:23,705 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 380 transitions. Word has length 31 [2024-10-13 14:02:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:23,705 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 380 transitions. [2024-10-13 14:02:23,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 380 transitions. [2024-10-13 14:02:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-13 14:02:23,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:23,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:23,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 14:02:23,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:23,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:23,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1272303665, now seen corresponding path program 1 times [2024-10-13 14:02:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222588182] [2024-10-13 14:02:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298657238] [2024-10-13 14:02:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:23,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:23,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:23,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 14:02:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:24,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 14:02:24,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:24,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:24,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:24,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 14:02:24,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-13 14:02:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:02:24,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:02:25,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222588182] [2024-10-13 14:02:25,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298657238] [2024-10-13 14:02:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298657238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:02:25,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:02:25,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:02:25,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775311408] [2024-10-13 14:02:25,215 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:02:25,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 14:02:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 14:02:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:25,216 INFO L87 Difference]: Start difference. First operand 286 states and 380 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:29,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:30,097 INFO L93 Difference]: Finished difference Result 382 states and 446 transitions. [2024-10-13 14:02:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 14:02:30,097 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-10-13 14:02:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:30,099 INFO L225 Difference]: With dead ends: 382 [2024-10-13 14:02:30,100 INFO L226 Difference]: Without dead ends: 381 [2024-10-13 14:02:30,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-10-13 14:02:30,100 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 626 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:30,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1187 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 357 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-13 14:02:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-13 14:02:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 286. [2024-10-13 14:02:30,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6479591836734695) internal successors, (323), 254 states have internal predecessors, (323), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-13 14:02:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 378 transitions. [2024-10-13 14:02:30,117 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 378 transitions. Word has length 32 [2024-10-13 14:02:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:30,118 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 378 transitions. [2024-10-13 14:02:30,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 378 transitions. [2024-10-13 14:02:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-13 14:02:30,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:30,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:30,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 14:02:30,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 14:02:30,320 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:30,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -786707894, now seen corresponding path program 1 times [2024-10-13 14:02:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501417349] [2024-10-13 14:02:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950589087] [2024-10-13 14:02:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:30,358 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:30,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 14:02:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:30,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-13 14:02:30,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:30,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:30,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:30,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:30,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:30,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-13 14:02:30,761 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 17 treesize of output 9 [2024-10-13 14:02:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:30,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501417349] [2024-10-13 14:02:30,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950589087] [2024-10-13 14:02:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950589087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:30,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:30,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 14:02:30,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663317422] [2024-10-13 14:02:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:30,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:02:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:02:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:30,788 INFO L87 Difference]: Start difference. First operand 286 states and 378 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:31,195 INFO L93 Difference]: Finished difference Result 377 states and 440 transitions. [2024-10-13 14:02:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:02:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-10-13 14:02:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:31,198 INFO L225 Difference]: With dead ends: 377 [2024-10-13 14:02:31,199 INFO L226 Difference]: Without dead ends: 376 [2024-10-13 14:02:31,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:31,199 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 493 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:31,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 684 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:02:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-13 14:02:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 286. [2024-10-13 14:02:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6377551020408163) internal successors, (321), 254 states have internal predecessors, (321), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-13 14:02:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 376 transitions. [2024-10-13 14:02:31,217 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 376 transitions. Word has length 33 [2024-10-13 14:02:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:31,217 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 376 transitions. [2024-10-13 14:02:31,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 376 transitions. [2024-10-13 14:02:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-13 14:02:31,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:31,218 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:31,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:31,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 14:02:31,419 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:31,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1381859121, now seen corresponding path program 1 times [2024-10-13 14:02:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:31,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918765196] [2024-10-13 14:02:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:31,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052627453] [2024-10-13 14:02:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:31,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:31,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:31,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:31,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 14:02:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:31,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-13 14:02:31,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:31,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:31,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:31,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:31,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:31,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-13 14:02:31,834 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 15 treesize of output 7 [2024-10-13 14:02:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:31,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918765196] [2024-10-13 14:02:31,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052627453] [2024-10-13 14:02:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052627453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 14:02:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909372820] [2024-10-13 14:02:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:31,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:02:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:02:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:31,864 INFO L87 Difference]: Start difference. First operand 286 states and 376 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:32,425 INFO L93 Difference]: Finished difference Result 376 states and 438 transitions. [2024-10-13 14:02:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:02:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-10-13 14:02:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:32,428 INFO L225 Difference]: With dead ends: 376 [2024-10-13 14:02:32,429 INFO L226 Difference]: Without dead ends: 375 [2024-10-13 14:02:32,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:32,431 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 349 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:32,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 908 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-10-13 14:02:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 286. [2024-10-13 14:02:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6275510204081634) internal successors, (319), 254 states have internal predecessors, (319), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-13 14:02:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 374 transitions. [2024-10-13 14:02:32,450 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 374 transitions. Word has length 34 [2024-10-13 14:02:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:32,450 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 374 transitions. [2024-10-13 14:02:32,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 374 transitions. [2024-10-13 14:02:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 14:02:32,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:32,452 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, 1, 1, 1] [2024-10-13 14:02:32,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 14:02:32,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 14:02:32,653 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:32,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash -625863665, now seen corresponding path program 1 times [2024-10-13 14:02:32,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:32,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566786162] [2024-10-13 14:02:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:32,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:32,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428453143] [2024-10-13 14:02:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:32,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:32,683 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:32,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 14:02:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:32,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 14:02:32,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:32,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:32,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:33,063 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 15 treesize of output 7 [2024-10-13 14:02:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:33,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:02:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566786162] [2024-10-13 14:02:33,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428453143] [2024-10-13 14:02:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428453143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:02:33,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:02:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:02:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957434211] [2024-10-13 14:02:33,118 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:02:33,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 14:02:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 14:02:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:33,119 INFO L87 Difference]: Start difference. First operand 286 states and 374 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:37,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:37,579 INFO L93 Difference]: Finished difference Result 431 states and 506 transitions. [2024-10-13 14:02:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 14:02:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-10-13 14:02:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:37,583 INFO L225 Difference]: With dead ends: 431 [2024-10-13 14:02:37,583 INFO L226 Difference]: Without dead ends: 430 [2024-10-13 14:02:37,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:02:37,584 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 452 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:37,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1224 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-10-13 14:02:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-10-13 14:02:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 342. [2024-10-13 14:02:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6434426229508197) internal successors, (401), 302 states have internal predecessors, (401), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 468 transitions. [2024-10-13 14:02:37,606 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 468 transitions. Word has length 41 [2024-10-13 14:02:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:37,607 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 468 transitions. [2024-10-13 14:02:37,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 468 transitions. [2024-10-13 14:02:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 14:02:37,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:37,608 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, 1, 1, 1, 1] [2024-10-13 14:02:37,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 14:02:37,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 14:02:37,809 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:37,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2073062930, now seen corresponding path program 1 times [2024-10-13 14:02:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:37,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783595558] [2024-10-13 14:02:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464219162] [2024-10-13 14:02:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:37,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:37,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 14:02:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:37,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 14:02:37,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:38,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:38,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:38,247 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 15 treesize of output 7 [2024-10-13 14:02:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:38,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:02:38,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:38,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783595558] [2024-10-13 14:02:38,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464219162] [2024-10-13 14:02:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464219162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:02:38,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:02:38,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:02:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903705944] [2024-10-13 14:02:38,474 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:02:38,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 14:02:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 14:02:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:38,475 INFO L87 Difference]: Start difference. First operand 342 states and 468 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:42,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:43,044 INFO L93 Difference]: Finished difference Result 430 states and 504 transitions. [2024-10-13 14:02:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 14:02:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-10-13 14:02:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:43,047 INFO L225 Difference]: With dead ends: 430 [2024-10-13 14:02:43,047 INFO L226 Difference]: Without dead ends: 429 [2024-10-13 14:02:43,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:02:43,048 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 352 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:43,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1170 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-10-13 14:02:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-10-13 14:02:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 342. [2024-10-13 14:02:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6352459016393444) internal successors, (399), 302 states have internal predecessors, (399), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 466 transitions. [2024-10-13 14:02:43,074 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 466 transitions. Word has length 42 [2024-10-13 14:02:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:43,075 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 466 transitions. [2024-10-13 14:02:43,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 466 transitions. [2024-10-13 14:02:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 14:02:43,076 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:43,077 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, 1, 1, 1, 1, 1] [2024-10-13 14:02:43,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 14:02:43,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 14:02:43,282 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:43,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash -159558543, now seen corresponding path program 1 times [2024-10-13 14:02:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:43,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733975364] [2024-10-13 14:02:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934647876] [2024-10-13 14:02:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:43,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:43,325 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:43,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 14:02:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:43,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 14:02:43,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:43,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:43,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:43,632 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 15 treesize of output 7 [2024-10-13 14:02:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 14:02:43,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733975364] [2024-10-13 14:02:43,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934647876] [2024-10-13 14:02:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934647876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:43,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:43,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 14:02:43,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981950573] [2024-10-13 14:02:43,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:43,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 14:02:43,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 14:02:43,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:43,647 INFO L87 Difference]: Start difference. First operand 342 states and 466 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:43,961 INFO L93 Difference]: Finished difference Result 439 states and 514 transitions. [2024-10-13 14:02:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 14:02:43,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-10-13 14:02:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:43,963 INFO L225 Difference]: With dead ends: 439 [2024-10-13 14:02:43,963 INFO L226 Difference]: Without dead ends: 438 [2024-10-13 14:02:43,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:43,964 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 352 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:43,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1049 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:02:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-10-13 14:02:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 342. [2024-10-13 14:02:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6270491803278688) internal successors, (397), 302 states have internal predecessors, (397), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2024-10-13 14:02:43,993 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 464 transitions. Word has length 43 [2024-10-13 14:02:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:43,993 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 464 transitions. [2024-10-13 14:02:43,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 464 transitions. [2024-10-13 14:02:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-13 14:02:43,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:43,994 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, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:44,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 14:02:44,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 14:02:44,195 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -651347468, now seen corresponding path program 1 times [2024-10-13 14:02:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624882127] [2024-10-13 14:02:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184531143] [2024-10-13 14:02:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:44,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:44,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 14:02:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:44,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 14:02:44,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:44,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:44,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:44,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 14:02:44,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-13 14:02:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 14:02:44,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624882127] [2024-10-13 14:02:44,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184531143] [2024-10-13 14:02:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184531143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:44,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 14:02:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349990447] [2024-10-13 14:02:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 14:02:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 14:02:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-13 14:02:44,857 INFO L87 Difference]: Start difference. First operand 342 states and 464 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:45,462 INFO L93 Difference]: Finished difference Result 438 states and 512 transitions. [2024-10-13 14:02:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 14:02:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2024-10-13 14:02:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:45,465 INFO L225 Difference]: With dead ends: 438 [2024-10-13 14:02:45,465 INFO L226 Difference]: Without dead ends: 437 [2024-10-13 14:02:45,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-10-13 14:02:45,466 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 537 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:45,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1043 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-10-13 14:02:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 342. [2024-10-13 14:02:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6188524590163935) internal successors, (395), 302 states have internal predecessors, (395), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 462 transitions. [2024-10-13 14:02:45,497 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 462 transitions. Word has length 44 [2024-10-13 14:02:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:45,497 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 462 transitions. [2024-10-13 14:02:45,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:02:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 462 transitions. [2024-10-13 14:02:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-13 14:02:45,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:45,498 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:45,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 14:02:45,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:45,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:45,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1283065043, now seen corresponding path program 1 times [2024-10-13 14:02:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362109220] [2024-10-13 14:02:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:45,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836175409] [2024-10-13 14:02:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:45,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:45,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:45,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:45,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 14:02:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:45,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-13 14:02:45,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:45,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:45,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:45,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:46,196 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 17 treesize of output 9 [2024-10-13 14:02:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 14:02:46,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:46,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362109220] [2024-10-13 14:02:46,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836175409] [2024-10-13 14:02:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836175409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:46,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:46,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 14:02:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371763598] [2024-10-13 14:02:46,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:46,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:02:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:46,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:02:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:46,221 INFO L87 Difference]: Start difference. First operand 342 states and 462 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 14:02:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:46,797 INFO L93 Difference]: Finished difference Result 427 states and 498 transitions. [2024-10-13 14:02:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:02:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-10-13 14:02:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:46,800 INFO L225 Difference]: With dead ends: 427 [2024-10-13 14:02:46,800 INFO L226 Difference]: Without dead ends: 426 [2024-10-13 14:02:46,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:46,801 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 485 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:46,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 857 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-10-13 14:02:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 342. [2024-10-13 14:02:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.610655737704918) internal successors, (393), 302 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 460 transitions. [2024-10-13 14:02:46,830 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 460 transitions. Word has length 45 [2024-10-13 14:02:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:46,830 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 460 transitions. [2024-10-13 14:02:46,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 14:02:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 460 transitions. [2024-10-13 14:02:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-13 14:02:46,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:46,833 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:46,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:47,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 14:02:47,034 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:47,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1120310742, now seen corresponding path program 1 times [2024-10-13 14:02:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:47,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991577420] [2024-10-13 14:02:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:47,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302520492] [2024-10-13 14:02:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:47,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:47,067 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:47,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 14:02:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:47,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-13 14:02:47,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:47,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:47,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:47,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:47,544 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 15 treesize of output 7 [2024-10-13 14:02:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 14:02:47,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991577420] [2024-10-13 14:02:47,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302520492] [2024-10-13 14:02:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302520492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 14:02:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473995433] [2024-10-13 14:02:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:47,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:02:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:47,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:02:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:47,571 INFO L87 Difference]: Start difference. First operand 342 states and 460 transitions. Second operand has 10 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 14:02:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:47,963 INFO L93 Difference]: Finished difference Result 426 states and 496 transitions. [2024-10-13 14:02:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:02:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-10-13 14:02:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:47,965 INFO L225 Difference]: With dead ends: 426 [2024-10-13 14:02:47,965 INFO L226 Difference]: Without dead ends: 425 [2024-10-13 14:02:47,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:47,966 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 470 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:47,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 689 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:02:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-13 14:02:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 342. [2024-10-13 14:02:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6024590163934427) internal successors, (391), 302 states have internal predecessors, (391), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 458 transitions. [2024-10-13 14:02:47,995 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 458 transitions. Word has length 46 [2024-10-13 14:02:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:47,995 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 458 transitions. [2024-10-13 14:02:47,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 14:02:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 458 transitions. [2024-10-13 14:02:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 14:02:47,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:47,996 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:48,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 14:02:48,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 14:02:48,200 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:48,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1475252626, now seen corresponding path program 1 times [2024-10-13 14:02:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985959365] [2024-10-13 14:02:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985959365] [2024-10-13 14:02:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985959365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:48,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:48,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 14:02:48,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123566617] [2024-10-13 14:02:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:48,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 14:02:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:48,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 14:02:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:02:48,952 INFO L87 Difference]: Start difference. First operand 342 states and 458 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 14:02:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:49,020 INFO L93 Difference]: Finished difference Result 342 states and 458 transitions. [2024-10-13 14:02:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 14:02:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2024-10-13 14:02:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:49,022 INFO L225 Difference]: With dead ends: 342 [2024-10-13 14:02:49,022 INFO L226 Difference]: Without dead ends: 341 [2024-10-13 14:02:49,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:02:49,022 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:49,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 431 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:02:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-10-13 14:02:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-10-13 14:02:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 244 states have (on average 1.5942622950819672) internal successors, (389), 301 states have internal predecessors, (389), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 456 transitions. [2024-10-13 14:02:49,059 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 456 transitions. Word has length 55 [2024-10-13 14:02:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:49,059 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 456 transitions. [2024-10-13 14:02:49,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 14:02:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 456 transitions. [2024-10-13 14:02:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 14:02:49,060 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:49,060 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:49,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 14:02:49,060 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:49,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1475252178, now seen corresponding path program 1 times [2024-10-13 14:02:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424854307] [2024-10-13 14:02:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:49,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:49,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424854307] [2024-10-13 14:02:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424854307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 14:02:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312270275] [2024-10-13 14:02:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:49,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 14:02:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 14:02:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:02:49,614 INFO L87 Difference]: Start difference. First operand 341 states and 456 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 14:02:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:49,681 INFO L93 Difference]: Finished difference Result 341 states and 456 transitions. [2024-10-13 14:02:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 14:02:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2024-10-13 14:02:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:49,683 INFO L225 Difference]: With dead ends: 341 [2024-10-13 14:02:49,683 INFO L226 Difference]: Without dead ends: 340 [2024-10-13 14:02:49,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:02:49,684 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 1 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:49,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 428 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:02:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-10-13 14:02:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2024-10-13 14:02:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 244 states have (on average 1.5860655737704918) internal successors, (387), 300 states have internal predecessors, (387), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 454 transitions. [2024-10-13 14:02:49,717 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 454 transitions. Word has length 55 [2024-10-13 14:02:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:49,717 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 454 transitions. [2024-10-13 14:02:49,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 14:02:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 454 transitions. [2024-10-13 14:02:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-13 14:02:49,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:49,718 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:49,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 14:02:49,718 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:49,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1511808750, now seen corresponding path program 1 times [2024-10-13 14:02:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184704619] [2024-10-13 14:02:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184704619] [2024-10-13 14:02:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184704619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:50,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:50,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:02:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856094205] [2024-10-13 14:02:50,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:50,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:02:50,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:02:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:02:50,110 INFO L87 Difference]: Start difference. First operand 340 states and 454 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:50,298 INFO L93 Difference]: Finished difference Result 346 states and 460 transitions. [2024-10-13 14:02:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:02:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2024-10-13 14:02:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:50,299 INFO L225 Difference]: With dead ends: 346 [2024-10-13 14:02:50,300 INFO L226 Difference]: Without dead ends: 345 [2024-10-13 14:02:50,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:50,300 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 79 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:50,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 733 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-13 14:02:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2024-10-13 14:02:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 246 states have (on average 1.58130081300813) internal successors, (389), 302 states have internal predecessors, (389), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 456 transitions. [2024-10-13 14:02:50,324 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 456 transitions. Word has length 56 [2024-10-13 14:02:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:50,324 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 456 transitions. [2024-10-13 14:02:50,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 456 transitions. [2024-10-13 14:02:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-13 14:02:50,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:50,325 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:50,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 14:02:50,325 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:50,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1511822652, now seen corresponding path program 1 times [2024-10-13 14:02:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041344390] [2024-10-13 14:02:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:50,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041344390] [2024-10-13 14:02:50,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041344390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:50,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:50,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:02:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405550336] [2024-10-13 14:02:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:50,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:02:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:02:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:02:50,724 INFO L87 Difference]: Start difference. First operand 342 states and 456 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:50,921 INFO L93 Difference]: Finished difference Result 345 states and 459 transitions. [2024-10-13 14:02:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:02:50,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2024-10-13 14:02:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:50,923 INFO L225 Difference]: With dead ends: 345 [2024-10-13 14:02:50,923 INFO L226 Difference]: Without dead ends: 344 [2024-10-13 14:02:50,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:02:50,923 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 77 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:50,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 733 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-13 14:02:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-13 14:02:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 248 states have (on average 1.5766129032258065) internal successors, (391), 304 states have internal predecessors, (391), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-13 14:02:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 458 transitions. [2024-10-13 14:02:50,948 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 458 transitions. Word has length 56 [2024-10-13 14:02:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:50,948 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 458 transitions. [2024-10-13 14:02:50,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 458 transitions. [2024-10-13 14:02:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-13 14:02:50,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:50,949 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:50,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 14:02:50,949 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:50,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash 378300059, now seen corresponding path program 1 times [2024-10-13 14:02:50,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:50,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802301212] [2024-10-13 14:02:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:50,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:02:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-13 14:02:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-13 14:02:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-13 14:02:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802301212] [2024-10-13 14:02:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802301212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:51,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675292899] [2024-10-13 14:02:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:51,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:51,357 INFO L87 Difference]: Start difference. First operand 344 states and 458 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 14:02:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:51,712 INFO L93 Difference]: Finished difference Result 346 states and 460 transitions. [2024-10-13 14:02:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 14:02:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2024-10-13 14:02:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:51,714 INFO L225 Difference]: With dead ends: 346 [2024-10-13 14:02:51,714 INFO L226 Difference]: Without dead ends: 345 [2024-10-13 14:02:51,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:02:51,715 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:51,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 678 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:02:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-13 14:02:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-10-13 14:02:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 304 states have internal predecessors, (388), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 456 transitions. [2024-10-13 14:02:51,744 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 456 transitions. Word has length 57 [2024-10-13 14:02:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:51,745 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 456 transitions. [2024-10-13 14:02:51,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 14:02:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 456 transitions. [2024-10-13 14:02:51,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-13 14:02:51,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:51,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:51,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 14:02:51,747 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:51,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:51,747 INFO L85 PathProgramCache]: Analyzing trace with hash 378569108, now seen corresponding path program 1 times [2024-10-13 14:02:51,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:51,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760754398] [2024-10-13 14:02:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:51,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:52,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:52,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760754398] [2024-10-13 14:02:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760754398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:52,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:02:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519753299] [2024-10-13 14:02:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:02:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:02:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:02:52,037 INFO L87 Difference]: Start difference. First operand 345 states and 456 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:52,210 INFO L93 Difference]: Finished difference Result 364 states and 464 transitions. [2024-10-13 14:02:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:02:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-10-13 14:02:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:52,213 INFO L225 Difference]: With dead ends: 364 [2024-10-13 14:02:52,213 INFO L226 Difference]: Without dead ends: 362 [2024-10-13 14:02:52,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:52,214 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 72 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:52,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 648 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-10-13 14:02:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 347. [2024-10-13 14:02:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 251 states have (on average 1.5537848605577689) internal successors, (390), 306 states have internal predecessors, (390), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 458 transitions. [2024-10-13 14:02:52,244 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 458 transitions. Word has length 57 [2024-10-13 14:02:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:52,245 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 458 transitions. [2024-10-13 14:02:52,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 458 transitions. [2024-10-13 14:02:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-13 14:02:52,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:52,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:52,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 14:02:52,246 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:52,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 378138132, now seen corresponding path program 1 times [2024-10-13 14:02:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190661630] [2024-10-13 14:02:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:52,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190661630] [2024-10-13 14:02:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190661630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:02:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874461682] [2024-10-13 14:02:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:52,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:02:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:02:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:02:52,526 INFO L87 Difference]: Start difference. First operand 347 states and 458 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:52,725 INFO L93 Difference]: Finished difference Result 381 states and 468 transitions. [2024-10-13 14:02:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:02:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-10-13 14:02:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:52,727 INFO L225 Difference]: With dead ends: 381 [2024-10-13 14:02:52,727 INFO L226 Difference]: Without dead ends: 379 [2024-10-13 14:02:52,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:52,728 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 103 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:52,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 668 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-13 14:02:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 347. [2024-10-13 14:02:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 251 states have (on average 1.545816733067729) internal successors, (388), 306 states have internal predecessors, (388), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 456 transitions. [2024-10-13 14:02:52,758 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 456 transitions. Word has length 57 [2024-10-13 14:02:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:52,758 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 456 transitions. [2024-10-13 14:02:52,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 456 transitions. [2024-10-13 14:02:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-13 14:02:52,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:52,759 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:52,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 14:02:52,759 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:52,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1157599924, now seen corresponding path program 1 times [2024-10-13 14:02:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887063908] [2024-10-13 14:02:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:02:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-13 14:02:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-13 14:02:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-13 14:02:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:53,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887063908] [2024-10-13 14:02:53,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887063908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:53,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:53,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648104631] [2024-10-13 14:02:53,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:53,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:53,165 INFO L87 Difference]: Start difference. First operand 347 states and 456 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 14:02:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:53,485 INFO L93 Difference]: Finished difference Result 347 states and 456 transitions. [2024-10-13 14:02:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 14:02:53,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-10-13 14:02:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:53,488 INFO L225 Difference]: With dead ends: 347 [2024-10-13 14:02:53,488 INFO L226 Difference]: Without dead ends: 346 [2024-10-13 14:02:53,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:02:53,489 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:53,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 678 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:02:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-10-13 14:02:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-10-13 14:02:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 251 states have (on average 1.5298804780876494) internal successors, (384), 305 states have internal predecessors, (384), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 452 transitions. [2024-10-13 14:02:53,529 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 452 transitions. Word has length 58 [2024-10-13 14:02:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:53,530 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 452 transitions. [2024-10-13 14:02:53,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 14:02:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 452 transitions. [2024-10-13 14:02:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-13 14:02:53,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:53,530 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:53,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 14:02:53,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:53,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1267304042, now seen corresponding path program 1 times [2024-10-13 14:02:53,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:53,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98591410] [2024-10-13 14:02:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98591410] [2024-10-13 14:02:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98591410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:02:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683516020] [2024-10-13 14:02:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:53,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:02:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:02:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:02:53,795 INFO L87 Difference]: Start difference. First operand 346 states and 452 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:53,987 INFO L93 Difference]: Finished difference Result 385 states and 472 transitions. [2024-10-13 14:02:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:02:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-13 14:02:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:53,990 INFO L225 Difference]: With dead ends: 385 [2024-10-13 14:02:53,990 INFO L226 Difference]: Without dead ends: 383 [2024-10-13 14:02:53,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:53,991 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 104 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:53,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 638 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-13 14:02:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 346. [2024-10-13 14:02:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 305 states have internal predecessors, (382), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 450 transitions. [2024-10-13 14:02:54,022 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 450 transitions. Word has length 59 [2024-10-13 14:02:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:54,022 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 450 transitions. [2024-10-13 14:02:54,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 450 transitions. [2024-10-13 14:02:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-13 14:02:54,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:54,023 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:54,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 14:02:54,024 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:54,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1681472426, now seen corresponding path program 1 times [2024-10-13 14:02:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454377679] [2024-10-13 14:02:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 14:02:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 14:02:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 14:02:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:54,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:54,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454377679] [2024-10-13 14:02:54,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454377679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:54,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:54,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:02:54,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900923570] [2024-10-13 14:02:54,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:54,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:02:54,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:54,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:02:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:02:54,288 INFO L87 Difference]: Start difference. First operand 346 states and 450 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:54,461 INFO L93 Difference]: Finished difference Result 362 states and 458 transitions. [2024-10-13 14:02:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:02:54,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-13 14:02:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:54,463 INFO L225 Difference]: With dead ends: 362 [2024-10-13 14:02:54,463 INFO L226 Difference]: Without dead ends: 360 [2024-10-13 14:02:54,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:54,464 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 69 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:54,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 645 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-13 14:02:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2024-10-13 14:02:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 255 states have (on average 1.5137254901960784) internal successors, (386), 309 states have internal predecessors, (386), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-13 14:02:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 454 transitions. [2024-10-13 14:02:54,495 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 454 transitions. Word has length 59 [2024-10-13 14:02:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:54,495 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 454 transitions. [2024-10-13 14:02:54,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 454 transitions. [2024-10-13 14:02:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-13 14:02:54,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:54,496 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:54,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-13 14:02:54,496 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:02:54,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 636962401, now seen corresponding path program 1 times [2024-10-13 14:02:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724738316] [2024-10-13 14:02:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877702462] [2024-10-13 14:02:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:54,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:54,540 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:02:54,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 14:02:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:54,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-13 14:02:54,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:54,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:54,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:54,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:55,157 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 23 treesize of output 3 [2024-10-13 14:02:55,195 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 15 treesize of output 7 [2024-10-13 14:02:55,199 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 15 treesize of output 7 [2024-10-13 14:02:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:02:55,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:02:55,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:55,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724738316] [2024-10-13 14:02:55,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:55,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877702462] [2024-10-13 14:02:55,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877702462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:02:55,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:02:55,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-13 14:02:55,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386354841] [2024-10-13 14:02:55,529 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:02:55,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:02:55,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:02:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:55,530 INFO L87 Difference]: Start difference. First operand 350 states and 454 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:02:59,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:00,037 INFO L93 Difference]: Finished difference Result 443 states and 537 transitions. [2024-10-13 14:03:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:03:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-10-13 14:03:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:00,039 INFO L225 Difference]: With dead ends: 443 [2024-10-13 14:03:00,040 INFO L226 Difference]: Without dead ends: 442 [2024-10-13 14:03:00,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:03:00,041 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 247 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:00,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 962 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-10-13 14:03:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-10-13 14:03:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 384. [2024-10-13 14:03:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 283 states have (on average 1.4946996466431095) internal successors, (423), 338 states have internal predecessors, (423), 34 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (45), 34 states have call predecessors, (45), 34 states have call successors, (45) [2024-10-13 14:03:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 502 transitions. [2024-10-13 14:03:00,077 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 502 transitions. Word has length 64 [2024-10-13 14:03:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:00,077 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 502 transitions. [2024-10-13 14:03:00,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:03:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 502 transitions. [2024-10-13 14:03:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-13 14:03:00,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:00,078 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:00,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 14:03:00,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 14:03:00,283 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:03:00,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -568169837, now seen corresponding path program 1 times [2024-10-13 14:03:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575094578] [2024-10-13 14:03:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716953891] [2024-10-13 14:03:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:00,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:00,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:00,328 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:00,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 14:03:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:00,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-13 14:03:00,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:00,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:03:00,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:03:00,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:03:00,905 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 15 treesize of output 7 [2024-10-13 14:03:00,939 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 34 treesize of output 11 [2024-10-13 14:03:00,985 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 15 treesize of output 7 [2024-10-13 14:03:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 14:03:00,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:03:01,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575094578] [2024-10-13 14:03:01,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716953891] [2024-10-13 14:03:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716953891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:03:01,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:03:01,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-13 14:03:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954949212] [2024-10-13 14:03:01,358 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:03:01,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:03:01,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:03:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:03:01,359 INFO L87 Difference]: Start difference. First operand 384 states and 502 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:03:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:01,774 INFO L93 Difference]: Finished difference Result 452 states and 532 transitions. [2024-10-13 14:03:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 14:03:01,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-10-13 14:03:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:01,776 INFO L225 Difference]: With dead ends: 452 [2024-10-13 14:03:01,776 INFO L226 Difference]: Without dead ends: 451 [2024-10-13 14:03:01,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:03:01,778 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 176 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:01,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1137 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:03:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-10-13 14:03:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 384. [2024-10-13 14:03:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 283 states have (on average 1.4911660777385158) internal successors, (422), 338 states have internal predecessors, (422), 34 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (45), 34 states have call predecessors, (45), 34 states have call successors, (45) [2024-10-13 14:03:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 501 transitions. [2024-10-13 14:03:01,817 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 501 transitions. Word has length 64 [2024-10-13 14:03:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:01,818 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 501 transitions. [2024-10-13 14:03:01,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 14:03:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 501 transitions. [2024-10-13 14:03:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-13 14:03:01,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:01,819 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:01,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 14:03:02,020 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-13 14:03:02,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1626202324, now seen corresponding path program 1 times [2024-10-13 14:03:02,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:02,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203666823] [2024-10-13 14:03:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466779452] [2024-10-13 14:03:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:02,051 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:02,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 14:03:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:02,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 14:03:02,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:02,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:03:02,516 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 15 treesize of output 7 [2024-10-13 14:03:02,519 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 15 treesize of output 7 [2024-10-13 14:03:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 14:03:02,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:03:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203666823] [2024-10-13 14:03:02,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466779452] [2024-10-13 14:03:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466779452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:03:02,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:03:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-13 14:03:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190636480] [2024-10-13 14:03:02,593 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:03:02,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 14:03:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 14:03:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-13 14:03:02,595 INFO L87 Difference]: Start difference. First operand 384 states and 501 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-13 14:03:06,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:10,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:14,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:18,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]