./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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_fermat1-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:11:59,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:11:59,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:11:59,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:11:59,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:11:59,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:11:59,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:11:59,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:11:59,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:11:59,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:11:59,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:11:59,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:11:59,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:11:59,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:11:59,626 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:11:59,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:11:59,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:11:59,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:11:59,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:11:59,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:11:59,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:11:59,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:11:59,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:11:59,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:11:59,632 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:11:59,632 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:11:59,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:11:59,633 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:11:59,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:11:59,633 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:11:59,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:11:59,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:11:59,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:11:59,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:11:59,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:59,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:11:59,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:11:59,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:11:59,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:11:59,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:11:59,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:11:59,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:11:59,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:11:59,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:11:59,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 [2024-11-19 11:11:59,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:11:59,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:11:59,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:11:59,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:11:59,965 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:11:59,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-11-19 11:12:01,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:12:01,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:12:01,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-11-19 11:12:01,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17392748/8e13503794804983b081d3cd0168621b/FLAGc92b15d5d [2024-11-19 11:12:01,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17392748/8e13503794804983b081d3cd0168621b [2024-11-19 11:12:01,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:12:01,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:12:01,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:12:01,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:12:01,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:12:01,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2533c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01, skipping insertion in model container [2024-11-19 11:12:01,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:12:01,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:12:01,863 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:12:01,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:12:01,907 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:12:01,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01 WrapperNode [2024-11-19 11:12:01,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:12:01,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:12:01,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:12:01,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:12:01,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,948 INFO L138 Inliner]: procedures = 18, calls = 83, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-11-19 11:12:01,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:12:01,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:12:01,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:12:01,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:12:01,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,982 INFO L175 MemorySlicer]: Split 53 memory accesses to 5 slices as follows [2, 8, 11, 16, 16]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 3, 2, 2]. [2024-11-19 11:12:01,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:01,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:02,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:12:02,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:12:02,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:12:02,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:12:02,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (1/1) ... [2024-11-19 11:12:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:12:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:02,043 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) [2024-11-19 11:12:02,045 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 [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_36_0 [2024-11-19 11:12:02,084 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_36_0 [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 11:12:02,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:12:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:12:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:12:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_43_0 [2024-11-19 11:12:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_43_0 [2024-11-19 11:12:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_46_to_51_0 [2024-11-19 11:12:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_46_to_51_0 [2024-11-19 11:12:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:12:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:12:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:12:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:12:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:12:02,176 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:12:02,178 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:12:02,922 INFO L? ?]: Removed 229 outVars from TransFormulas that were not future-live. [2024-11-19 11:12:02,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:12:02,945 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:12:02,946 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 11:12:02,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:12:02 BoogieIcfgContainer [2024-11-19 11:12:02,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:12:02,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:12:02,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:12:02,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:12:02,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:12:01" (1/3) ... [2024-11-19 11:12:02,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49971139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:12:02, skipping insertion in model container [2024-11-19 11:12:02,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:12:01" (2/3) ... [2024-11-19 11:12:02,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49971139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:12:02, skipping insertion in model container [2024-11-19 11:12:02,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:12:02" (3/3) ... [2024-11-19 11:12:02,956 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_fermat1-ll.c [2024-11-19 11:12:02,972 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:12:02,972 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2024-11-19 11:12:03,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:12:03,053 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;@5434c724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:12:03,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2024-11-19 11:12:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 123 states have (on average 1.8130081300813008) internal successors, (223), 218 states have internal predecessors, (223), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 11:12:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 11:12:03,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:03,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 11:12:03,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-11-19 11:12:03,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 207603, now seen corresponding path program 1 times [2024-11-19 11:12:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:03,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079868668] [2024-11-19 11:12:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:12:03,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079868668] [2024-11-19 11:12:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079868668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:12:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686894885] [2024-11-19 11:12:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:03,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:12:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:12:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:03,364 INFO L87 Difference]: Start difference. First operand has 233 states, 123 states have (on average 1.8130081300813008) internal successors, (223), 218 states have internal predecessors, (223), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:03,526 INFO L93 Difference]: Finished difference Result 447 states and 489 transitions. [2024-11-19 11:12:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:12:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-19 11:12:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:03,540 INFO L225 Difference]: With dead ends: 447 [2024-11-19 11:12:03,541 INFO L226 Difference]: Without dead ends: 220 [2024-11-19 11:12:03,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:03,553 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 15 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:03,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 420 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-19 11:12:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-19 11:12:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 118 states have (on average 1.7457627118644068) internal successors, (206), 206 states have internal predecessors, (206), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:12:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 228 transitions. [2024-11-19 11:12:03,612 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 228 transitions. Word has length 3 [2024-11-19 11:12:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:03,613 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 228 transitions. [2024-11-19 11:12:03,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 228 transitions. [2024-11-19 11:12:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 11:12:03,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:03,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 11:12:03,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:12:03,617 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-11-19 11:12:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 6435908, now seen corresponding path program 1 times [2024-11-19 11:12:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34164309] [2024-11-19 11:12:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:12:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:03,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34164309] [2024-11-19 11:12:03,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34164309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:03,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:12:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181461508] [2024-11-19 11:12:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:03,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:12:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:12:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:03,704 INFO L87 Difference]: Start difference. First operand 220 states and 228 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:03,766 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2024-11-19 11:12:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:12:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-19 11:12:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:03,768 INFO L225 Difference]: With dead ends: 220 [2024-11-19 11:12:03,770 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 11:12:03,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:03,772 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 14 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:03,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 407 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:12:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 11:12:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-19 11:12:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 118 states have (on average 1.7118644067796611) internal successors, (202), 202 states have internal predecessors, (202), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:12:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 224 transitions. [2024-11-19 11:12:03,787 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 224 transitions. Word has length 4 [2024-11-19 11:12:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:03,788 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 224 transitions. [2024-11-19 11:12:03,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 224 transitions. [2024-11-19 11:12:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:12:03,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:03,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:03,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:12:03,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-11-19 11:12:03,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -531863416, now seen corresponding path program 1 times [2024-11-19 11:12:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957595633] [2024-11-19 11:12:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:03,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915452552] [2024-11-19 11:12:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:03,837 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) [2024-11-19 11:12:03,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:12:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:03,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 11:12:03,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:12:03,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957595633] [2024-11-19 11:12:03,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915452552] [2024-11-19 11:12:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915452552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:12:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321930834] [2024-11-19 11:12:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:03,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:12:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:12:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:04,001 INFO L87 Difference]: Start difference. First operand 216 states and 224 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:04,051 INFO L93 Difference]: Finished difference Result 216 states and 224 transitions. [2024-11-19 11:12:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:12:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 11:12:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:04,053 INFO L225 Difference]: With dead ends: 216 [2024-11-19 11:12:04,053 INFO L226 Difference]: Without dead ends: 214 [2024-11-19 11:12:04,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:12:04,055 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:04,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 407 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:12:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-19 11:12:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-19 11:12:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 118 states have (on average 1.694915254237288) internal successors, (200), 200 states have internal predecessors, (200), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:12:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 222 transitions. [2024-11-19 11:12:04,075 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 222 transitions. Word has length 8 [2024-11-19 11:12:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:04,075 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 222 transitions. [2024-11-19 11:12:04,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:12:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 222 transitions. [2024-11-19 11:12:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 11:12:04,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:04,077 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] [2024-11-19 11:12:04,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:12:04,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:04,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-11-19 11:12:04,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1154191927, now seen corresponding path program 1 times [2024-11-19 11:12:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414519503] [2024-11-19 11:12:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471321999] [2024-11-19 11:12:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:04,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:04,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:04,346 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) [2024-11-19 11:12:04,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:12:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:04,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 11:12:04,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:04,498 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 [2024-11-19 11:12:04,602 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 [2024-11-19 11:12:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:04,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414519503] [2024-11-19 11:12:04,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471321999] [2024-11-19 11:12:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471321999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:12:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273447351] [2024-11-19 11:12:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:04,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:12:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:12:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:12:04,615 INFO L87 Difference]: Start difference. First operand 214 states and 222 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:12:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:04,745 INFO L93 Difference]: Finished difference Result 214 states and 222 transitions. [2024-11-19 11:12:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:12:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-19 11:12:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:04,747 INFO L225 Difference]: With dead ends: 214 [2024-11-19 11:12:04,747 INFO L226 Difference]: Without dead ends: 213 [2024-11-19 11:12:04,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:04,748 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 203 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:04,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 592 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-19 11:12:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-19 11:12:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 118 states have (on average 1.6864406779661016) internal successors, (199), 199 states have internal predecessors, (199), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:12:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 221 transitions. [2024-11-19 11:12:04,761 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 221 transitions. Word has length 27 [2024-11-19 11:12:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:04,762 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 221 transitions. [2024-11-19 11:12:04,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:12:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 221 transitions. [2024-11-19 11:12:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 11:12:04,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:04,763 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:04,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:12:04,967 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,SelfDestructingSolverStorable3 [2024-11-19 11:12:04,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-11-19 11:12:04,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1420211612, now seen corresponding path program 1 times [2024-11-19 11:12:04,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824206874] [2024-11-19 11:12:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat