./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.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 c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:15:49,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:15:49,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:15:49,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:15:49,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:15:49,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:15:49,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:15:49,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:15:49,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:15:49,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:15:49,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:15:49,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:15:49,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:15:49,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:15:49,328 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:15:49,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:15:49,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:15:49,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:15:49,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:15:49,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:15:49,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:15:49,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:15:49,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:15:49,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:15:49,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:15:49,334 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:15:49,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:15:49,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:15:49,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:15:49,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:15:49,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:15:49,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:15:49,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:15:49,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:15:49,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:15:49,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:15:49,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:15:49,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:15:49,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:15:49,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:15:49,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:15:49,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:15:49,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:15:49,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:15:49,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a [2024-11-09 12:15:49,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:15:49,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:15:49,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:15:49,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:15:49,681 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:15:49,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2024-11-09 12:15:51,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:15:51,678 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:15:51,679 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2024-11-09 12:15:51,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1bf6ce7f/d8e76b899701455aa5b713daf004f00f/FLAGe8f7704cd [2024-11-09 12:15:51,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1bf6ce7f/d8e76b899701455aa5b713daf004f00f [2024-11-09 12:15:51,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:15:51,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:15:51,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:15:51,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:15:51,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:15:51,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:15:51" (1/1) ... [2024-11-09 12:15:51,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8200e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:51, skipping insertion in model container [2024-11-09 12:15:51,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:15:51" (1/1) ... [2024-11-09 12:15:51,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:15:51,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:15:51,988 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:15:52,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:15:52,045 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:15:52,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52 WrapperNode [2024-11-09 12:15:52,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:15:52,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:15:52,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:15:52,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:15:52,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,092 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2024-11-09 12:15:52,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:15:52,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:15:52,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:15:52,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:15:52,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,142 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 8, 10, 8, 6, 10, 5]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 3, 2, 3, 2, 1, 1]. [2024-11-09 12:15:52,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:15:52,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:15:52,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:15:52,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:15:52,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (1/1) ... [2024-11-09 12:15:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:15:52,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:52,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 12:15:52,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 12:15:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_51_0 [2024-11-09 12:15:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_51_0 [2024-11-09 12:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 12:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_54_0 [2024-11-09 12:15:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_54_0 [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:15:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 12:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 12:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:15:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:15:52,486 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:15:52,489 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:15:52,990 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2024-11-09 12:15:52,990 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:15:53,008 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:15:53,008 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 12:15:53,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:15:53 BoogieIcfgContainer [2024-11-09 12:15:53,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:15:53,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:15:53,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:15:53,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:15:53,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:15:51" (1/3) ... [2024-11-09 12:15:53,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ab0320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:15:53, skipping insertion in model container [2024-11-09 12:15:53,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:52" (2/3) ... [2024-11-09 12:15:53,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ab0320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:15:53, skipping insertion in model container [2024-11-09 12:15:53,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:15:53" (3/3) ... [2024-11-09 12:15:53,018 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv.c [2024-11-09 12:15:53,035 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:15:53,035 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-09 12:15:53,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:15:53,117 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;@7dafd096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:15:53,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-09 12:15:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 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) [2024-11-09 12:15:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:15:53,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:53,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:53,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_31_to_54_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:15:53,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 18041770, now seen corresponding path program 1 times [2024-11-09 12:15:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112450151] [2024-11-09 12:15:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112450151] [2024-11-09 12:15:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112450151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:53,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 12:15:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465697546] [2024-11-09 12:15:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:53,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 12:15:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 12:15:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 12:15:53,424 INFO L87 Difference]: Start difference. First operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:53,498 INFO L93 Difference]: Finished difference Result 202 states and 238 transitions. [2024-11-09 12:15:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 12:15:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 12:15:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:53,558 INFO L225 Difference]: With dead ends: 202 [2024-11-09 12:15:53,562 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 12:15:53,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 12:15:53,580 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:53,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:15:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 12:15:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-09 12:15:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 84 states have internal predecessors, (84), 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) [2024-11-09 12:15:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-09 12:15:53,634 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 8 [2024-11-09 12:15:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:53,635 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-09 12:15:53,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-09 12:15:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:15:53,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:53,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:53,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:15:53,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_54_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:15:53,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash 75300072, now seen corresponding path program 1 times [2024-11-09 12:15:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937176899] [2024-11-09 12:15:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:53,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331219309] [2024-11-09 12:15:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:53,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:53,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:53,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:15:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:53,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 12:15:53,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:53,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:53,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937176899] [2024-11-09 12:15:53,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331219309] [2024-11-09 12:15:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331219309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:53,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:53,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870536674] [2024-11-09 12:15:53,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:53,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:53,986 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:54,168 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2024-11-09 12:15:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:15:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 12:15:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:54,174 INFO L225 Difference]: With dead ends: 126 [2024-11-09 12:15:54,174 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 12:15:54,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:54,175 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 41 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:54,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 460 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 12:15:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2024-11-09 12:15:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 96 states have internal predecessors, (101), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-09 12:15:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2024-11-09 12:15:54,189 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 8 [2024-11-09 12:15:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:54,189 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2024-11-09 12:15:54,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2024-11-09 12:15:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 12:15:54,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:54,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:54,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:15:54,390 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 [2024-11-09 12:15:54,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_54_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:15:54,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -123368594, now seen corresponding path program 1 times [2024-11-09 12:15:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760602825] [2024-11-09 12:15:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347509663] [2024-11-09 12:15:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:54,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:54,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:54,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:54,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:15:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:54,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 12:15:54,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:54,662 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 [2024-11-09 12:15:54,698 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 [2024-11-09 12:15:54,919 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 [2024-11-09 12:15:54,933 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 [2024-11-09 12:15:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:54,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760602825] [2024-11-09 12:15:54,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347509663] [2024-11-09 12:15:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347509663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:15:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796178383] [2024-11-09 12:15:54,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:54,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:15:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:15:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:15:54,956 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:15:58,967 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] [2024-11-09 12:16:03,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:07,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:11,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:15,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:15,282 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2024-11-09 12:16:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 12:16:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:15,285 INFO L225 Difference]: With dead ends: 184 [2024-11-09 12:16:15,285 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 12:16:15,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:15,287 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 107 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:15,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 530 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2024-11-09 12:16:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 12:16:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2024-11-09 12:16:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.565217391304348) internal successors, (144), 125 states have internal predecessors, (144), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-09 12:16:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 181 transitions. [2024-11-09 12:16:15,305 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 181 transitions. Word has length 16 [2024-11-09 12:16:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:15,306 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 181 transitions. [2024-11-09 12:16:15,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 181 transitions. [2024-11-09 12:16:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 12:16:15,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:15,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:15,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 12:16:15,508 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 [2024-11-09 12:16:15,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_54_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:15,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 470540978, now seen corresponding path program 1 times [2024-11-09 12:16:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352529000] [2024-11-09 12:16:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700156833] [2024-11-09 12:16:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:15,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:15,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:15,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:15,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:16:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:15,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 12:16:15,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:15,708 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 [2024-11-09 12:16:15,738 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 [2024-11-09 12:16:15,963 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 [2024-11-09 12:16:16,010 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 [2024-11-09 12:16:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:16,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352529000] [2024-11-09 12:16:16,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700156833] [2024-11-09 12:16:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700156833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:16,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:16:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962013550] [2024-11-09 12:16:16,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:16,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:16,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:16,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:16,043 INFO L87 Difference]: Start difference. First operand 146 states and 181 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:16,483 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2024-11-09 12:16:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:16:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 12:16:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:16,486 INFO L225 Difference]: With dead ends: 183 [2024-11-09 12:16:16,486 INFO L226 Difference]: Without dead ends: 182 [2024-11-09 12:16:16,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:16,488 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 100 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:16,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 713 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:16:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-09 12:16:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2024-11-09 12:16:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 125 states have internal predecessors, (143), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-09 12:16:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2024-11-09 12:16:16,503 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 17 [2024-11-09 12:16:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:16,504 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2024-11-09 12:16:16,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2024-11-09 12:16:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 12:16:16,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:16,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:16,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:16,709 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 [2024-11-09 12:16:16,709 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_31_to_54_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:16,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:16,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1701868528, now seen corresponding path program 1 times [2024-11-09 12:16:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:16,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371119102] [2024-11-09 12:16:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950011542] [2024-11-09 12:16:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:16,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:16,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:16,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:16,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:16:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:16,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 12:16:16,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:16,877 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 [2024-11-09 12:16:16,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-09 12:16:16,893 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 [2024-11-09 12:16:16,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:17,021 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 [2024-11-09 12:16:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:17,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371119102] [2024-11-09 12:16:17,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950011542] [2024-11-09 12:16:17,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950011542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:16:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798240362] [2024-11-09 12:16:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:17,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:16:17,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:16:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:17,037 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:21,234 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] [2024-11-09 12:16:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:21,337 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2024-11-09 12:16:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 12:16:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:21,340 INFO L225 Difference]: With dead ends: 178 [2024-11-09 12:16:21,340 INFO L226 Difference]: Without dead ends: 177 [2024-11-09 12:16:21,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:21,341 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 113 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:21,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 552 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 12:16:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-09 12:16:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2024-11-09 12:16:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 125 states have internal predecessors, (142), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-09 12:16:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2024-11-09 12:16:21,355 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 18 [2024-11-09 12:16:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:21,356 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2024-11-09 12:16:21,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2024-11-09 12:16:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 12:16:21,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:21,357 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:21,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 12:16:21,560 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 [2024-11-09 12:16:21,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_31_to_54_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:21,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1218316916, now seen corresponding path program 1 times [2024-11-09 12:16:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:21,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956723347] [2024-11-09 12:16:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:21,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983119450] [2024-11-09 12:16:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:21,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:21,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:21,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:21,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:16:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:21,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 12:16:21,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:21,705 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 [2024-11-09 12:16:21,716 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 23 treesize of output 15 [2024-11-09 12:16:21,720 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 [2024-11-09 12:16:21,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:21,878 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 [2024-11-09 12:16:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:21,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956723347] [2024-11-09 12:16:21,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983119450] [2024-11-09 12:16:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983119450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:16:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804582981] [2024-11-09 12:16:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:21,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:16:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:16:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:21,899 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:22,202 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2024-11-09 12:16:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 12:16:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:22,204 INFO L225 Difference]: With dead ends: 181 [2024-11-09 12:16:22,204 INFO L226 Difference]: Without dead ends: 180 [2024-11-09 12:16:22,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:22,205 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 100 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:22,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 569 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-09 12:16:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2024-11-09 12:16:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 125 states have internal predecessors, (141), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-09 12:16:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2024-11-09 12:16:22,220 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 19 [2024-11-09 12:16:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:22,220 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2024-11-09 12:16:22,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2024-11-09 12:16:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:16:22,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:22,221 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] [2024-11-09 12:16:22,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:22,422 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 [2024-11-09 12:16:22,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:22,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1508488603, now seen corresponding path program 1 times [2024-11-09 12:16:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827146758] [2024-11-09 12:16:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:22,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842320028] [2024-11-09 12:16:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:22,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:22,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:22,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:16:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:22,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 12:16:22,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:22,593 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 [2024-11-09 12:16:22,701 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 [2024-11-09 12:16:22,749 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 [2024-11-09 12:16:22,754 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 [2024-11-09 12:16:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:22,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827146758] [2024-11-09 12:16:22,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842320028] [2024-11-09 12:16:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842320028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:22,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:16:22,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941692925] [2024-11-09 12:16:22,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:22,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:22,772 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:26,786 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] [2024-11-09 12:16:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:27,118 INFO L93 Difference]: Finished difference Result 224 states and 281 transitions. [2024-11-09 12:16:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:16:27,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-09 12:16:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:27,122 INFO L225 Difference]: With dead ends: 224 [2024-11-09 12:16:27,122 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 12:16:27,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:16:27,124 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 203 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:27,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 521 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 12:16:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 12:16:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2024-11-09 12:16:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 155 states have internal predecessors, (187), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-09 12:16:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2024-11-09 12:16:27,150 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 30 [2024-11-09 12:16:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:27,150 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2024-11-09 12:16:27,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2024-11-09 12:16:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:16:27,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:27,151 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] [2024-11-09 12:16:27,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:27,351 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 [2024-11-09 12:16:27,352 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:27,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1510815828, now seen corresponding path program 1 times [2024-11-09 12:16:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481688528] [2024-11-09 12:16:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:27,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:27,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341393470] [2024-11-09 12:16:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:27,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:27,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:16:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:27,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 12:16:27,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:27,533 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 [2024-11-09 12:16:27,695 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 [2024-11-09 12:16:27,706 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 [2024-11-09 12:16:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:27,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481688528] [2024-11-09 12:16:27,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341393470] [2024-11-09 12:16:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341393470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601990147] [2024-11-09 12:16:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:27,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:27,720 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:31,730 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] [2024-11-09 12:16:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:32,111 INFO L93 Difference]: Finished difference Result 192 states and 248 transitions. [2024-11-09 12:16:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:16:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-09 12:16:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:32,117 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:16:32,117 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 12:16:32,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:32,118 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 142 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:32,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 113 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 317 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 12:16:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 12:16:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2024-11-09 12:16:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.52) internal successors, (190), 157 states have internal predecessors, (190), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-09 12:16:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2024-11-09 12:16:32,135 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 30 [2024-11-09 12:16:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:32,135 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2024-11-09 12:16:32,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2024-11-09 12:16:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 12:16:32,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:32,137 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] [2024-11-09 12:16:32,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 12:16:32,340 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 [2024-11-09 12:16:32,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:32,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 481493600, now seen corresponding path program 1 times [2024-11-09 12:16:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512025291] [2024-11-09 12:16:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:32,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760464693] [2024-11-09 12:16:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:32,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:32,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:16:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:32,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 12:16:32,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:32,533 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 [2024-11-09 12:16:32,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:32,895 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 22 treesize of output 10 [2024-11-09 12:16:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:32,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512025291] [2024-11-09 12:16:32,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760464693] [2024-11-09 12:16:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760464693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:32,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 12:16:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629380313] [2024-11-09 12:16:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:32,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 12:16:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:32,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 12:16:32,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:32,921 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:36,948 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] [2024-11-09 12:16:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:37,427 INFO L93 Difference]: Finished difference Result 227 states and 284 transitions. [2024-11-09 12:16:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-09 12:16:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:37,429 INFO L225 Difference]: With dead ends: 227 [2024-11-09 12:16:37,429 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 12:16:37,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:16:37,431 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 187 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:37,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 689 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 12:16:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 12:16:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2024-11-09 12:16:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.504) internal successors, (188), 157 states have internal predecessors, (188), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-09 12:16:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 240 transitions. [2024-11-09 12:16:37,448 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 240 transitions. Word has length 31 [2024-11-09 12:16:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:37,449 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 240 transitions. [2024-11-09 12:16:37,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 240 transitions. [2024-11-09 12:16:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 12:16:37,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:37,450 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] [2024-11-09 12:16:37,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 12:16:37,650 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 [2024-11-09 12:16:37,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:37,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash 409349725, now seen corresponding path program 1 times [2024-11-09 12:16:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332980903] [2024-11-09 12:16:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766970222] [2024-11-09 12:16:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:37,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:37,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:37,680 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) [2024-11-09 12:16:37,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 12:16:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:37,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 12:16:37,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:37,834 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 [2024-11-09 12:16:37,992 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 [2024-11-09 12:16:37,996 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 [2024-11-09 12:16:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:38,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:38,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332980903] [2024-11-09 12:16:38,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:38,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766970222] [2024-11-09 12:16:38,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766970222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:38,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:38,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:16:38,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761264597] [2024-11-09 12:16:38,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:38,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:16:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:16:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:16:38,015 INFO L87 Difference]: Start difference. First operand 188 states and 240 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:42,033 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] [2024-11-09 12:16:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:42,554 INFO L93 Difference]: Finished difference Result 192 states and 245 transitions. [2024-11-09 12:16:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:16:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-09 12:16:42,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:42,556 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:16:42,556 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 12:16:42,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:42,557 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:42,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 194 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 12:16:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 12:16:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2024-11-09 12:16:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.5) internal successors, (189), 158 states have internal predecessors, (189), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-09 12:16:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 241 transitions. [2024-11-09 12:16:42,579 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 241 transitions. Word has length 31 [2024-11-09 12:16:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:42,579 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 241 transitions. [2024-11-09 12:16:42,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 241 transitions. [2024-11-09 12:16:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 12:16:42,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:42,582 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] [2024-11-09 12:16:42,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 12:16:42,782 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 [2024-11-09 12:16:42,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:42,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -195060274, now seen corresponding path program 1 times [2024-11-09 12:16:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260021110] [2024-11-09 12:16:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:42,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450867156] [2024-11-09 12:16:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:42,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:42,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:42,828 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) [2024-11-09 12:16:42,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 12:16:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:42,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 12:16:42,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:42,953 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 [2024-11-09 12:16:42,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:42,975 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 11 [2024-11-09 12:16:43,003 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 11 treesize of output 7 [2024-11-09 12:16:43,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 12:16:43,244 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 30 treesize of output 30 [2024-11-09 12:16:43,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:16:43,306 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 [2024-11-09 12:16:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:43,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260021110] [2024-11-09 12:16:43,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450867156] [2024-11-09 12:16:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450867156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:43,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:16:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584758222] [2024-11-09 12:16:43,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:43,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:16:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:16:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:16:43,324 INFO L87 Difference]: Start difference. First operand 189 states and 241 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:16:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:43,848 INFO L93 Difference]: Finished difference Result 192 states and 244 transitions. [2024-11-09 12:16:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-09 12:16:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:43,850 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:16:43,850 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 12:16:43,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:16:43,851 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 131 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:43,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 164 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:16:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 12:16:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-09 12:16:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 159 states have internal predecessors, (190), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-09 12:16:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2024-11-09 12:16:43,870 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 32 [2024-11-09 12:16:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:43,871 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2024-11-09 12:16:43,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:16:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2024-11-09 12:16:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 12:16:43,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:43,872 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] [2024-11-09 12:16:43,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 12:16:44,075 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 [2024-11-09 12:16:44,076 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:44,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1751901057, now seen corresponding path program 1 times [2024-11-09 12:16:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48147364] [2024-11-09 12:16:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113213840] [2024-11-09 12:16:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:44,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:44,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:44,123 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) [2024-11-09 12:16:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 12:16:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:44,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 12:16:44,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:44,252 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 [2024-11-09 12:16:44,254 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 [2024-11-09 12:16:44,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:44,271 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 23 treesize of output 15 [2024-11-09 12:16:44,275 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 [2024-11-09 12:16:44,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:16:44,386 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 [2024-11-09 12:16:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:44,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48147364] [2024-11-09 12:16:44,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113213840] [2024-11-09 12:16:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113213840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510860772] [2024-11-09 12:16:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:44,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:44,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:44,407 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:44,843 INFO L93 Difference]: Finished difference Result 192 states and 243 transitions. [2024-11-09 12:16:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:16:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-09 12:16:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:44,846 INFO L225 Difference]: With dead ends: 192 [2024-11-09 12:16:44,846 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 12:16:44,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:44,847 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:44,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 153 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:16:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 12:16:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-09 12:16:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5081967213114753) internal successors, (184), 154 states have internal predecessors, (184), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-09 12:16:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2024-11-09 12:16:44,885 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 33 [2024-11-09 12:16:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:44,885 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2024-11-09 12:16:44,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:44,885 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2024-11-09 12:16:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:16:44,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:44,886 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:44,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 12:16:45,087 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 [2024-11-09 12:16:45,087 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_40_to_51_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:45,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1500464396, now seen corresponding path program 1 times [2024-11-09 12:16:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288649694] [2024-11-09 12:16:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564667107] [2024-11-09 12:16:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:45,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:45,122 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) [2024-11-09 12:16:45,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 12:16:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:45,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-09 12:16:45,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:45,273 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 [2024-11-09 12:16:45,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:45,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:45,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:16:45,674 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 [2024-11-09 12:16:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:45,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288649694] [2024-11-09 12:16:45,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564667107] [2024-11-09 12:16:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564667107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:16:45,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:16:45,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-09 12:16:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126918249] [2024-11-09 12:16:45,826 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:45,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 12:16:45,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:45,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 12:16:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:16:45,827 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:46,191 INFO L93 Difference]: Finished difference Result 213 states and 247 transitions. [2024-11-09 12:16:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:46,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-09 12:16:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:46,193 INFO L225 Difference]: With dead ends: 213 [2024-11-09 12:16:46,193 INFO L226 Difference]: Without dead ends: 212 [2024-11-09 12:16:46,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 12:16:46,194 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 145 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:46,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 507 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:16:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-09 12:16:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 188. [2024-11-09 12:16:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.48) internal successors, (185), 157 states have internal predecessors, (185), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-09 12:16:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2024-11-09 12:16:46,213 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 38 [2024-11-09 12:16:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:46,213 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2024-11-09 12:16:46,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2024-11-09 12:16:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:16:46,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:46,214 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:46,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 12:16:46,415 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 [2024-11-09 12:16:46,415 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_40_to_51_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:46,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash -730243937, now seen corresponding path program 1 times [2024-11-09 12:16:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509520243] [2024-11-09 12:16:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828612770] [2024-11-09 12:16:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:46,448 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) [2024-11-09 12:16:46,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 12:16:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:46,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 12:16:46,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:46,589 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 [2024-11-09 12:16:46,616 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 [2024-11-09 12:16:46,925 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 [2024-11-09 12:16:46,930 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 [2024-11-09 12:16:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 12:16:46,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:46,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509520243] [2024-11-09 12:16:46,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828612770] [2024-11-09 12:16:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828612770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:46,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:16:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174122064] [2024-11-09 12:16:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:46,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:46,945 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:47,246 INFO L93 Difference]: Finished difference Result 212 states and 245 transitions. [2024-11-09 12:16:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:16:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-09 12:16:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:47,248 INFO L225 Difference]: With dead ends: 212 [2024-11-09 12:16:47,248 INFO L226 Difference]: Without dead ends: 211 [2024-11-09 12:16:47,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:16:47,249 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:47,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 722 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-09 12:16:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2024-11-09 12:16:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.464) internal successors, (183), 157 states have internal predecessors, (183), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-09 12:16:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2024-11-09 12:16:47,267 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 39 [2024-11-09 12:16:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:47,267 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2024-11-09 12:16:47,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2024-11-09 12:16:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:16:47,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:47,268 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:47,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 12:16:47,469 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 [2024-11-09 12:16:47,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_40_to_51_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 12:16:47,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1162725522, now seen corresponding path program 1 times [2024-11-09 12:16:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536111943] [2024-11-09 12:16:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:47,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat