./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:35:57,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:35:57,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:35:57,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:35:57,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:35:57,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:35:57,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:35:57,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:35:57,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:35:57,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:35:57,215 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:35:57,215 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:35:57,215 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:35:57,215 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:35:57,218 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:35:57,218 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:35:57,218 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:35:57,218 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:35:57,219 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:35:57,219 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:35:57,219 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:35:57,219 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:35:57,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:35:57,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:35:57,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:35:57,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:35:57,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:35:57,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:35:57,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:35:57,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:35:57,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:35:57,222 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:35:57,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:35:57,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:35:57,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:35:57,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:35:57,223 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff [2024-11-13 23:35:57,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:35:57,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:35:57,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:35:57,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:35:57,594 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:35:57,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i Unable to find full path for "g++" [2024-11-13 23:35:59,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:36:00,047 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:36:00,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i [2024-11-13 23:36:00,074 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/65b58a76f/b9ef6a7f93bf4ad2b9d44509c6dc53b2/FLAG2b4c0cf97 [2024-11-13 23:36:00,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/65b58a76f/b9ef6a7f93bf4ad2b9d44509c6dc53b2 [2024-11-13 23:36:00,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:36:00,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:36:00,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:36:00,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:36:00,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:36:00,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:36:00" (1/1) ... [2024-11-13 23:36:00,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b78eaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:00, skipping insertion in model container [2024-11-13 23:36:00,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:36:00" (1/1) ... [2024-11-13 23:36:00,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:36:00,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568] [2024-11-13 23:36:00,398 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:3128) 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:1611) 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:792) 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:1516) 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:1167) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1150) 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:388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1638) 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:3515) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2508) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:642) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 23:36:00,409 INFO L158 Benchmark]: Toolchain (without parser) took 306.57ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 83.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:36:00,409 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:36:00,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.94ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 83.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:36:00,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.94ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 83.4MB in the end (delta: 10.6MB). 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: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:36:02,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:36:03,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-13 23:36:03,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:36:03,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:36:03,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:36:03,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:36:03,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:36:03,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:36:03,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:36:03,058 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:36:03,058 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:36:03,059 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:36:03,059 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:36:03,059 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:36:03,059 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:36:03,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:36:03,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:36:03,060 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 23:36:03,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:36:03,062 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 23:36:03,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:36:03,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:36:03,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:36:03,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:36:03,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 23:36:03,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:36:03,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:36:03,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 23:36:03,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:36:03,065 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:36:03,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff [2024-11-13 23:36:03,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:36:03,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:36:03,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:36:03,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:36:03,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:36:03,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i Unable to find full path for "g++" [2024-11-13 23:36:05,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:36:05,549 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:36:05,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i [2024-11-13 23:36:05,558 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/387f3af84/349a6502c8c04c7eb60b197acb928091/FLAGbcc0bfa40 [2024-11-13 23:36:05,885 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/data/387f3af84/349a6502c8c04c7eb60b197acb928091 [2024-11-13 23:36:05,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:36:05,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:36:05,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:36:05,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:36:05,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:36:05,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:36:05" (1/1) ... [2024-11-13 23:36:05,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eef0855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:05, skipping insertion in model container [2024-11-13 23:36:05,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:36:05" (1/1) ... [2024-11-13 23:36:05,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:36:06,100 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568] [2024-11-13 23:36:06,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:36:06,199 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:36:06,214 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568] [2024-11-13 23:36:06,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:36:06,294 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:36:06,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06 WrapperNode [2024-11-13 23:36:06,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:36:06,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:36:06,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:36:06,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:36:06,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,343 INFO L138 Inliner]: procedures = 22, calls = 177, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98 [2024-11-13 23:36:06,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:36:06,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:36:06,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:36:06,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:36:06,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:36:06,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:36:06,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:36:06,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:36:06,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (1/1) ... [2024-11-13 23:36:06,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:36:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:36:06,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:36:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:36:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_67_0 [2024-11-13 23:36:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_67_0 [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:36:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:36:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 23:36:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 23:36:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:36:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-13 23:36:06,640 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:36:06,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:36:09,859 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 23:36:09,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:36:09,871 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:36:09,871 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:36:09,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:36:09 BoogieIcfgContainer [2024-11-13 23:36:09,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:36:09,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:36:09,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:36:09,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:36:09,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:36:05" (1/3) ... [2024-11-13 23:36:09,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316f510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:36:09, skipping insertion in model container [2024-11-13 23:36:09,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:36:06" (2/3) ... [2024-11-13 23:36:09,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316f510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:36:09, skipping insertion in model container [2024-11-13 23:36:09,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:36:09" (3/3) ... [2024-11-13 23:36:09,881 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_knuth.i [2024-11-13 23:36:09,896 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:36:09,898 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_knuth.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:36:09,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:36:09,961 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=FINITE_AUTOMATA, 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;@5ea96bdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:36:09,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:36:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 23:36:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 23:36:09,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:36:09,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:36:09,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:36:09,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:36:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1507585790, now seen corresponding path program 1 times [2024-11-13 23:36:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:36:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686485760] [2024-11-13 23:36:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:09,988 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 [2024-11-13 23:36:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:36:09,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-13 23:36:09,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:36:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:36:10,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 23:36:10,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:36:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:36:10,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:36:10,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:36:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686485760] [2024-11-13 23:36:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686485760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:36:10,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:36:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:36:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134433493] [2024-11-13 23:36:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:36:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:36:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:36:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:36:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:36:10,896 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 23:36:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:36:10,918 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2024-11-13 23:36:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:36:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-13 23:36:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:36:10,926 INFO L225 Difference]: With dead ends: 83 [2024-11-13 23:36:10,926 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 23:36:10,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:36:10,933 INFO L432 NwaCegarLoop]: 55 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, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:36:10,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:36:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 23:36:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 23:36:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 23:36:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-11-13 23:36:10,969 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 21 [2024-11-13 23:36:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:36:10,970 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-11-13 23:36:10,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 23:36:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-11-13 23:36:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 23:36:10,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:36:10,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:36:10,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:36:11,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:36:11,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:36:11,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:36:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1900098182, now seen corresponding path program 1 times [2024-11-13 23:36:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:36:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301362259] [2024-11-13 23:36:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:11,174 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 [2024-11-13 23:36:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:36:11,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-13 23:36:11,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df44241-6a0e-433e-9bec-cc26c016eb23/bin/utaipan-verify-sOmjnqqW8E/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