./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/nla-digbench-scaling/knuth_valuebound5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:13:33,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:13:33,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:13:33,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:13:33,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:13:33,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:13:33,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:13:33,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:13:33,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:13:33,454 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:13:33,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:13:33,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:13:33,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:13:33,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:13:33,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:13:33,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:13:33,457 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:13:33,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:13:33,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:13:33,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:13:33,458 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 [2025-03-08 05:13:33,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:13:33,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:13:33,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:13:33,680 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:13:33,681 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:13:33,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2025-03-08 05:13:34,802 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6e95af7/9ea530c4afd74a10adbaf59fd999488c/FLAG71dff88e0 [2025-03-08 05:13:35,040 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:13:35,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2025-03-08 05:13:35,046 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6e95af7/9ea530c4afd74a10adbaf59fd999488c/FLAG71dff88e0 [2025-03-08 05:13:35,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6e95af7/9ea530c4afd74a10adbaf59fd999488c [2025-03-08 05:13:35,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:13:35,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:13:35,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:13:35,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:13:35,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:13:35,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:13:35" (1/1) ... [2025-03-08 05:13:35,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3198cc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:35, skipping insertion in model container [2025-03-08 05:13:35,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:13:35" (1/1) ... [2025-03-08 05:13:35,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:13:35,496 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2025-03-08 05:13:35,508 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:629) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:3127) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:255) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1658) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:271) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:791) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1548) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:224) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1195) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1178) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:392) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1685) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3589) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2572) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:649) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:189) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:116) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:145) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-03-08 05:13:35,516 INFO L158 Benchmark]: Toolchain (without parser) took 133.79ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 114.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:13:35,516 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:13:35,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.17ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 114.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:13:35,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.17ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 114.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:629) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/nla-digbench-scaling/knuth_valuebound5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:13:37,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:13:37,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 05:13:37,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:13:37,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:13:37,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:13:37,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:13:37,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:13:37,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:13:37,317 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:13:37,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:13:37,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:13:37,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:13:37,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:13:37,318 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:13:37,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:13:37,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:13:37,319 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:13:37,320 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:13:37,321 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:13:37,321 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:13:37,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:13:37,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:13:37,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:13:37,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:13:37,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:13:37,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:13:37,322 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:13:37,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:13:37,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:13:37,323 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 [2025-03-08 05:13:37,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:13:37,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:13:37,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:13:37,583 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:13:37,583 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:13:37,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2025-03-08 05:13:38,690 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33aa78c/a3be8253de514a9290ab6e156b1334d7/FLAG22ebebeaa [2025-03-08 05:13:38,868 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:13:38,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2025-03-08 05:13:38,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33aa78c/a3be8253de514a9290ab6e156b1334d7/FLAG22ebebeaa [2025-03-08 05:13:38,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa33aa78c/a3be8253de514a9290ab6e156b1334d7 [2025-03-08 05:13:38,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:13:38,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:13:38,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:13:38,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:13:38,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:13:38,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:13:38" (1/1) ... [2025-03-08 05:13:38,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c295f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:38, skipping insertion in model container [2025-03-08 05:13:38,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:13:38" (1/1) ... [2025-03-08 05:13:38,900 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:13:38,993 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2025-03-08 05:13:39,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:13:39,026 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:13:39,035 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2025-03-08 05:13:39,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:13:39,060 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:13:39,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39 WrapperNode [2025-03-08 05:13:39,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:13:39,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:13:39,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:13:39,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:13:39,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,095 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2025-03-08 05:13:39,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:13:39,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:13:39,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:13:39,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:13:39,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,122 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-08 05:13:39,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,128 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:13:39,137 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:13:39,137 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:13:39,137 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:13:39,138 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (1/1) ... [2025-03-08 05:13:39,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:13:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:13:39,169 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) [2025-03-08 05:13:39,175 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 [2025-03-08 05:13:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:13:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 05:13:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-08 05:13:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 05:13:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 05:13:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:13:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:13:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 05:13:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 05:13:39,239 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:13:39,241 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:13:44,105 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-08 05:13:44,105 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:13:44,110 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:13:44,110 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:13:44,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:13:44 BoogieIcfgContainer [2025-03-08 05:13:44,111 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:13:44,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:13:44,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:13:44,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:13:44,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:13:38" (1/3) ... [2025-03-08 05:13:44,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:13:44, skipping insertion in model container [2025-03-08 05:13:44,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:13:39" (2/3) ... [2025-03-08 05:13:44,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:13:44, skipping insertion in model container [2025-03-08 05:13:44,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:13:44" (3/3) ... [2025-03-08 05:13:44,118 INFO L128 eAbstractionObserver]: Analyzing ICFG knuth_valuebound5.i [2025-03-08 05:13:44,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:13:44,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG knuth_valuebound5.i that has 3 procedures, 30 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:13:44,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:13:44,176 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;@6ac005e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:13:44,177 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:13:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 05:13:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 05:13:44,183 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:13:44,183 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:13:44,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:13:44,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:13:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash -280219175, now seen corresponding path program 1 times [2025-03-08 05:13:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 05:13:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853762549] [2025-03-08 05:13:44,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:13:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 05:13:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 05:13:44,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 05:13:44,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-03-08 05:13:44,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:13:44,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:13:44,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:13:44,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:13:44,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 05:13:44,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:13:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:13:44,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:13:44,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 05:13:44,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853762549] [2025-03-08 05:13:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853762549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:13:44,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:13:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 05:13:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078895192] [2025-03-08 05:13:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:13:44,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:13:44,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 05:13:44,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:13:44,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:13:44,473 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:13:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:13:44,484 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2025-03-08 05:13:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:13:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-08 05:13:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:13:44,492 INFO L225 Difference]: With dead ends: 57 [2025-03-08 05:13:44,492 INFO L226 Difference]: Without dead ends: 26 [2025-03-08 05:13:44,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:13:44,495 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:13:44,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:13:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-08 05:13:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-03-08 05:13:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 05:13:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2025-03-08 05:13:44,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 28 [2025-03-08 05:13:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:13:44,524 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2025-03-08 05:13:44,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:13:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2025-03-08 05:13:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 05:13:44,525 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:13:44,526 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:13:44,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-03-08 05:13:44,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 05:13:44,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:13:44,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:13:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 105109047, now seen corresponding path program 1 times [2025-03-08 05:13:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 05:13:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898586855] [2025-03-08 05:13:44,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:13:44,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 05:13:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 05:13:44,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 05:13:44,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-03-08 05:13:44,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:13:45,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:13:45,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:13:45,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:13:45,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 05:13:45,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:13:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 05:13:50,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:14:02,804 WARN L873 $PredicateComparison]: unable to prove that (= (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|) (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse3)) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse3)) |c_ULTIMATE.start_main_~a~0#1|)))))) is different from true [2025-03-08 05:14:11,262 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 05:14:19,780 WARN L873 $PredicateComparison]: unable to prove that (or (= (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|) (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse3)) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse3)) |c_ULTIMATE.start_main_~a~0#1|)))))) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) is different from true [2025-03-08 05:14:31,902 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 05:14:40,190 WARN L873 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)) (= (let ((.cse2 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse2)) (.cse3 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse1)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse2))) (bvneg (bvmul (bvmul (_ bv4 32) .cse3) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse0))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2025-03-08 05:14:52,324 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 05:15:08,917 WARN L286 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 05:15:17,199 WARN L873 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)) (= (let ((.cse2 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse2)) (.cse3 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse1)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse2))) (bvneg (bvmul (bvmul (_ bv4 32) .cse3) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse0))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true