./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:03:58,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:03:58,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:03:58,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:03:58,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:03:58,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:03:58,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:03:58,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:03:58,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:03:58,917 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:03:58,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:03:58,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:03:58,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:03:58,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:03:58,919 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:03:58,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:03:58,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:03:58,919 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:03:58,920 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:03:58,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:58,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:03:58,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:03:58,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:03:58,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:03:58,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:03:58,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:03:58,922 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c [2025-02-08 10:03:59,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:03:59,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:03:59,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:03:59,142 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:03:59,143 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:03:59,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2025-02-08 10:04:00,318 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/896930919/82a590681a7540d58c8f03f9232cf395/FLAGb4928a915 [2025-02-08 10:04:00,545 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:04:00,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2025-02-08 10:04:00,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/896930919/82a590681a7540d58c8f03f9232cf395/FLAGb4928a915 [2025-02-08 10:04:00,885 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/896930919/82a590681a7540d58c8f03f9232cf395 [2025-02-08 10:04:00,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:04:00,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:04:00,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:04:00,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:04:00,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:04:00,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:04:00" (1/1) ... [2025-02-08 10:04:00,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e250ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:00, skipping insertion in model container [2025-02-08 10:04:00,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:04:00" (1/1) ... [2025-02-08 10:04:00,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:04:01,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:04:01,024 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:04:01,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:04:01,058 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:04:01,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01 WrapperNode [2025-02-08 10:04:01,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:04:01,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:04:01,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:04:01,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:04:01,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,088 INFO L138 Inliner]: procedures = 16, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2025-02-08 10:04:01,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:04:01,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:04:01,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:04:01,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:04:01,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,110 INFO L175 MemorySlicer]: Split 36 memory accesses to 5 slices as follows [2, 6, 8, 10, 10]. 28 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]. [2025-02-08 10:04:01,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,117 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:04:01,127 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:04:01,127 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:04:01,127 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:04:01,128 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (1/1) ... [2025-02-08 10:04:01,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:04:01,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:01,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:04:01,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:04:01,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 10:04:01,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_42_0 [2025-02-08 10:04:01,179 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_42_0 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:04:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:04:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:04:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:04:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:04:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:04:01,247 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:04:01,248 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:04:01,587 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L81: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#u~0#1.base, main_~#u~0#1.offset);havoc main_~#u~0#1.base, main_~#u~0#1.offset;call ULTIMATE.dealloc(main_~#v~0#1.base, main_~#v~0#1.offset);havoc main_~#v~0#1.base, main_~#v~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset; [2025-02-08 10:04:01,617 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2025-02-08 10:04:01,620 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:04:01,633 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:04:01,634 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:04:01,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:04:01 BoogieIcfgContainer [2025-02-08 10:04:01,635 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:04:01,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:04:01,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:04:01,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:04:01,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:04:00" (1/3) ... [2025-02-08 10:04:01,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b898f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:04:01, skipping insertion in model container [2025-02-08 10:04:01,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:01" (2/3) ... [2025-02-08 10:04:01,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b898f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:04:01, skipping insertion in model container [2025-02-08 10:04:01,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:04:01" (3/3) ... [2025-02-08 10:04:01,643 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_fermat2-ll.c [2025-02-08 10:04:01,656 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:04:01,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_fermat2-ll.c that has 4 procedures, 141 locations, 1 initial locations, 0 loop locations, and 56 error locations. [2025-02-08 10:04:01,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:04:01,722 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;@44cb89ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:04:01,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2025-02-08 10:04:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 75 states have (on average 1.8133333333333332) internal successors, (136), 132 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 10:04:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 10:04:01,729 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:01,729 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 10:04:01,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:01,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash 5440, now seen corresponding path program 1 times [2025-02-08 10:04:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:01,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821601802] [2025-02-08 10:04:01,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:01,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:01,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 10:04:01,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 10:04:01,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:01,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:04:01,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821601802] [2025-02-08 10:04:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821601802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:01,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 10:04:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726988472] [2025-02-08 10:04:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:01,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:04:01,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:01,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:04:01,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:01,924 INFO L87 Difference]: Start difference. First operand has 141 states, 75 states have (on average 1.8133333333333332) internal successors, (136), 132 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2025-02-08 10:04:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:01,992 INFO L93 Difference]: Finished difference Result 265 states and 287 transitions. [2025-02-08 10:04:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:04:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-02-08 10:04:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,000 INFO L225 Difference]: With dead ends: 265 [2025-02-08 10:04:02,001 INFO L226 Difference]: Without dead ends: 130 [2025-02-08 10:04:02,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:02,008 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 15 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:02,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 228 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-08 10:04:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-02-08 10:04:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 122 states have internal predecessors, (123), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:04:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2025-02-08 10:04:02,037 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 2 [2025-02-08 10:04:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,037 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2025-02-08 10:04:02,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2025-02-08 10:04:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2025-02-08 10:04:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 10:04:02,037 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 10:04:02,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:04:02,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:02,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 168746, now seen corresponding path program 1 times [2025-02-08 10:04:02,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:02,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190863593] [2025-02-08 10:04:02,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:02,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 10:04:02,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 10:04:02,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:04:02,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:02,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190863593] [2025-02-08 10:04:02,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190863593] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 10:04:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331017110] [2025-02-08 10:04:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:02,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:04:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:02,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:04:02,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:02,088 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 10:04:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:02,123 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2025-02-08 10:04:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:04:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2025-02-08 10:04:02,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,124 INFO L225 Difference]: With dead ends: 130 [2025-02-08 10:04:02,124 INFO L226 Difference]: Without dead ends: 126 [2025-02-08 10:04:02,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:02,125 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 14 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 217 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 [2025-02-08 10:04:02,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 217 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-02-08 10:04:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-02-08 10:04:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 118 states have internal predecessors, (119), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:04:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2025-02-08 10:04:02,133 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 3 [2025-02-08 10:04:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,133 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2025-02-08 10:04:02,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2025-02-08 10:04:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2025-02-08 10:04:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 10:04:02,134 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:02,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 10:04:02,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:02,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1224851494, now seen corresponding path program 1 times [2025-02-08 10:04:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7358048] [2025-02-08 10:04:02,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:02,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:04:02,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:04:02,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689451225] [2025-02-08 10:04:02,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:02,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:02,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:04:02,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:04:02,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:04:02,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:02,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 10:04:02,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:04:02,255 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:02,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7358048] [2025-02-08 10:04:02,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689451225] [2025-02-08 10:04:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689451225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 10:04:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238489894] [2025-02-08 10:04:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:02,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:04:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:02,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:04:02,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:02,257 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:04:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:02,281 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2025-02-08 10:04:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:04:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 10:04:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,283 INFO L225 Difference]: With dead ends: 126 [2025-02-08 10:04:02,283 INFO L226 Difference]: Without dead ends: 124 [2025-02-08 10:04:02,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:04:02,283 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 10 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 217 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 [2025-02-08 10:04:02,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 217 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-08 10:04:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-02-08 10:04:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 72 states have (on average 1.625) internal successors, (117), 116 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:04:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2025-02-08 10:04:02,290 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 7 [2025-02-08 10:04:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,290 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2025-02-08 10:04:02,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:04:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2025-02-08 10:04:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-08 10:04:02,291 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,291 INFO L218 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] [2025-02-08 10:04:02,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:04:02,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:02,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:02,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -45830820, now seen corresponding path program 1 times [2025-02-08 10:04:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971746848] [2025-02-08 10:04:02,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:02,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:04:02,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:04:02,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401018266] [2025-02-08 10:04:02,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:02,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:02,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:02,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:04:02,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:04:02,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:04:02,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:02,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 10:04:02,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:02,660 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 [2025-02-08 10:04:02,743 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 [2025-02-08 10:04:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:04:02,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971746848] [2025-02-08 10:04:02,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401018266] [2025-02-08 10:04:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401018266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 10:04:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122983561] [2025-02-08 10:04:02,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:02,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:04:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:02,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:04:02,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:04:02,758 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-02-08 10:04:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:02,825 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2025-02-08 10:04:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:04:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 26 [2025-02-08 10:04:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,826 INFO L225 Difference]: With dead ends: 124 [2025-02-08 10:04:02,827 INFO L226 Difference]: Without dead ends: 123 [2025-02-08 10:04:02,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:02,827 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 104 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:02,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 325 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-08 10:04:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-02-08 10:04:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.6111111111111112) internal successors, (116), 115 states have internal predecessors, (116), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:04:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2025-02-08 10:04:02,833 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 26 [2025-02-08 10:04:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,834 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2025-02-08 10:04:02,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-02-08 10:04:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2025-02-08 10:04:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-08 10:04:02,834 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,835 INFO L218 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] [2025-02-08 10:04:02,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 10:04:03,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:03,039 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:03,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1420755342, now seen corresponding path program 1 times [2025-02-08 10:04:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184583793] [2025-02-08 10:04:03,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:03,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 10:04:03,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 10:04:03,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:03,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:04:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184583793] [2025-02-08 10:04:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184583793] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:03,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:03,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:04:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670072171] [2025-02-08 10:04:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:03,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:03,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:03,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:03,397 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:04:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:03,476 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2025-02-08 10:04:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:03,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2025-02-08 10:04:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:03,477 INFO L225 Difference]: With dead ends: 123 [2025-02-08 10:04:03,477 INFO L226 Difference]: Without dead ends: 122 [2025-02-08 10:04:03,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:03,478 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 3 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:03,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 668 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-02-08 10:04:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2025-02-08 10:04:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.5972222222222223) internal successors, (115), 114 states have internal predecessors, (115), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:04:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2025-02-08 10:04:03,484 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 27 [2025-02-08 10:04:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:03,484 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2025-02-08 10:04:03,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:04:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2025-02-08 10:04:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 10:04:03,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:03,485 INFO L218 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] [2025-02-08 10:04:03,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:04:03,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_42_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:03,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2061469189, now seen corresponding path program 1 times [2025-02-08 10:04:03,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805406176] [2025-02-08 10:04:03,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:03,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:04:03,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:04:03,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:03,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat