./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:44,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:44,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:27:44,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:44,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:44,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:44,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:44,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:44,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:27:44,816 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:27:44,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:44,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:44,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:44,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:44,821 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:44,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:44,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:44,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:44,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:27:44,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:44,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:44,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:44,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:44,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:44,825 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:27:44,826 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:27:44,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:44,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:44,827 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:44,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:44,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:44,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:44,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:44,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:44,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:44,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:44,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:44,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:27:44,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:27:44,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:44,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:44,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:44,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:44,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:44,833 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2023-11-21 22:27:45,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:45,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:45,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:45,179 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:45,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:45,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-11-21 22:27:48,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:48,503 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:48,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-11-21 22:27:48,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/6a15eb8aa/7fab5063a23b415c98f54fc244663ec6/FLAG076e3fe91 [2023-11-21 22:27:48,525 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/6a15eb8aa/7fab5063a23b415c98f54fc244663ec6 [2023-11-21 22:27:48,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:48,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:48,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:48,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:48,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:48,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:48" (1/1) ... [2023-11-21 22:27:48,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b943159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:48, skipping insertion in model container [2023-11-21 22:27:48,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:48" (1/1) ... [2023-11-21 22:27:48,563 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:48,733 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:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1427) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:222) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:383) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3412) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2432) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) 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) [2023-11-21 22:27:48,739 INFO L158 Benchmark]: Toolchain (without parser) took 209.09ms. Allocated memory is still 163.6MB. Free memory was 133.1MB in the beginning and 124.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:27:48,740 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 121.6MB. Free memory was 81.3MB in the beginning and 81.2MB in the end (delta: 129.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:48,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.89ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 124.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:27:48,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 121.6MB. Free memory was 81.3MB in the beginning and 81.2MB in the end (delta: 129.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.89ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 124.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. 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:610) 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:51,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:51,427 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2023-11-21 22:27:51,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:51,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:51,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:51,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:51,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:51,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:27:51,500 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:27:51,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:51,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:51,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:51,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:51,504 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:51,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:51,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:51,506 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:51,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:51,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:51,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:51,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:51,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:51,510 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:27:51,510 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:27:51,511 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:27:51,511 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:27:51,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:27:51,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:51,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:51,514 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:51,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:51,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:51,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:51,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:51,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:51,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:51,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:51,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:51,518 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:27:51,518 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:27:51,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:51,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:51,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:51,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:51,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:51,520 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:27:51,520 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2023-11-21 22:27:51,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:51,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:51,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:51,949 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:51,950 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:51,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-11-21 22:27:55,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:55,614 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:55,615 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-11-21 22:27:55,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/b9b1f9e4a/2470af8ff9d24090b828d08d79638d68/FLAG88a254235 [2023-11-21 22:27:55,639 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/data/b9b1f9e4a/2470af8ff9d24090b828d08d79638d68 [2023-11-21 22:27:55,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:55,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:55,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:55,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:55,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:55,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:55,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f76e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55, skipping insertion in model container [2023-11-21 22:27:55,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:55,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:55,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:55,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:55,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:55,943 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:55,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55 WrapperNode [2023-11-21 22:27:55,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:55,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:55,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:55,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:55,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:55,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:55,996 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-11-21 22:27:55,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:55,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:55,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:55,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:56,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,021 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,046 INFO L187 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-21 22:27:56,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:56,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:56,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:56,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:56,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (1/1) ... [2023-11-21 22:27:56,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:56,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:56,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-21 22:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:27:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:27:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:27:56,297 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:56,299 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:59,603 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:59,726 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:59,727 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:27:59,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:59 BoogieIcfgContainer [2023-11-21 22:27:59,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:59,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:59,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:59,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:59,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:55" (1/3) ... [2023-11-21 22:27:59,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10218c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:59, skipping insertion in model container [2023-11-21 22:27:59,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:55" (2/3) ... [2023-11-21 22:27:59,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10218c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:59, skipping insertion in model container [2023-11-21 22:27:59,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:59" (3/3) ... [2023-11-21 22:27:59,745 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound1.i [2023-11-21 22:27:59,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:59,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:27:59,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:59,834 INFO L357 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, mHoare=true, 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;@588c090c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:59,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 22:27:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:27:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:27:59,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:59,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:59,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:27:59,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 627492777, now seen corresponding path program 1 times [2023-11-21 22:27:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482093189] [2023-11-21 22:27:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:59,871 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 [2023-11-21 22:27:59,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:59,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:27:59,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:00,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 22:28:00,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:28:00,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:00,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:28:00,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482093189] [2023-11-21 22:28:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482093189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:00,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:00,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:28:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034532675] [2023-11-21 22:28:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:28:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:28:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:28:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:28:00,354 INFO L87 Difference]: Start difference. First operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:28:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:00,524 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-11-21 22:28:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:28:00,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-21 22:28:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:00,537 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:28:00,537 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 22:28:00,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:28:00,544 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:28:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 22:28:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 22:28:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:28:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-11-21 22:28:00,586 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2023-11-21 22:28:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:00,588 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-21 22:28:00,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:28:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 22:28:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:28:00,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:00,591 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:00,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:00,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:00,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:28:00,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2022560349, now seen corresponding path program 1 times [2023-11-21 22:28:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:28:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687427825] [2023-11-21 22:28:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:00,808 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 [2023-11-21 22:28:00,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:28:00,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:28:00,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:01,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:28:01,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:28:01,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:28:01,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:28:01,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687427825] [2023-11-21 22:28:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687427825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:01,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47836208] [2023-11-21 22:28:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:01,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:28:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:28:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:28:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:28:01,705 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:28:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:02,228 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-21 22:28:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:28:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2023-11-21 22:28:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:02,234 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:28:02,234 INFO L226 Difference]: Without dead ends: 22 [2023-11-21 22:28:02,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:28:02,236 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:02,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:28:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-21 22:28:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-11-21 22:28:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:28:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-21 22:28:02,245 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2023-11-21 22:28:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:02,246 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-21 22:28:02,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:28:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-21 22:28:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 22:28:02,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:02,248 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:02,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:02,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:28:02,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1141899866, now seen corresponding path program 1 times [2023-11-21 22:28:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:28:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863775653] [2023-11-21 22:28:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:02,465 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 [2023-11-21 22:28:02,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:28:02,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:28:02,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 (4)] Waiting until timeout for monitored process [2023-11-21 22:28:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:02,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:28:02,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:28:04,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:28:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:28:05,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:28:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863775653] [2023-11-21 22:28:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863775653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:28:05,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:28:05,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-21 22:28:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695836324] [2023-11-21 22:28:05,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:28:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:28:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:28:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:28:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:28:05,724 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:28:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:08,248 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-21 22:28:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:28:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 28 [2023-11-21 22:28:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:08,251 INFO L225 Difference]: With dead ends: 33 [2023-11-21 22:28:08,251 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:28:08,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:28:08,253 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:08,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 40 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 22:28:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:28:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:28:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:28:08,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-21 22:28:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:08,256 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:28:08,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:28:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:28:08,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:28:08,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 22:28:08,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 22:28:08,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:08,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:28:08,809 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-11-21 22:28:08,809 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-11-21 22:28:08,809 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:28:08,810 INFO L899 garLoopResultBuilder]: For program point L44(lines 40 70) no Hoare annotation was computed. [2023-11-21 22:28:08,810 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (= ~counter~0 (_ bv1 32)) [2023-11-21 22:28:08,810 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:28:08,810 INFO L899 garLoopResultBuilder]: For program point L40-1(line 40) no Hoare annotation was computed. [2023-11-21 22:28:08,810 INFO L899 garLoopResultBuilder]: For program point L40-2(line 40) no Hoare annotation was computed. [2023-11-21 22:28:08,811 INFO L899 garLoopResultBuilder]: For program point L40-3(lines 40 70) no Hoare annotation was computed. [2023-11-21 22:28:08,811 INFO L899 garLoopResultBuilder]: For program point L40-5(lines 40 70) no Hoare annotation was computed. [2023-11-21 22:28:08,811 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (= ~counter~0 (_ bv0 32)) [2023-11-21 22:28:08,811 INFO L895 garLoopResultBuilder]: At program point L32-1(line 32) the Hoare annotation is: (= ~counter~0 (_ bv0 32)) [2023-11-21 22:28:08,811 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-11-21 22:28:08,812 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 40 70) the Hoare annotation is: (or (= ~counter~0 (_ bv1 32)) (= ~counter~0 (_ bv0 32))) [2023-11-21 22:28:08,812 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (= ~counter~0 (_ bv1 32)) [2023-11-21 22:28:08,815 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (= ~counter~0 (_ bv1 32)) [2023-11-21 22:28:08,817 INFO L895 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (= ~counter~0 (_ bv1 32)) [2023-11-21 22:28:08,817 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-11-21 22:28:08,817 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2023-11-21 22:28:08,818 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2023-11-21 22:28:08,818 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2023-11-21 22:28:08,825 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:28:08,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:28:08,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:28:08 BoogieIcfgContainer [2023-11-21 22:28:08,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:28:08,847 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:28:08,847 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:28:08,848 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:28:08,848 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:59" (3/4) ... [2023-11-21 22:28:08,851 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:28:08,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-21 22:28:08,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-21 22:28:08,864 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-21 22:28:08,864 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-21 22:28:08,865 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 22:28:08,865 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:28:08,866 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:28:08,966 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:28:08,967 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:28:08,967 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:28:08,968 INFO L158 Benchmark]: Toolchain (without parser) took 13325.28ms. Allocated memory was 77.6MB in the beginning and 111.1MB in the end (delta: 33.6MB). Free memory was 55.0MB in the beginning and 50.5MB in the end (delta: 4.5MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,968 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:08,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.02ms. Allocated memory is still 77.6MB. Free memory was 54.7MB in the beginning and 42.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.85ms. Allocated memory is still 77.6MB. Free memory was 42.3MB in the beginning and 40.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,970 INFO L158 Benchmark]: Boogie Preprocessor took 95.17ms. Allocated memory is still 77.6MB. Free memory was 40.3MB in the beginning and 38.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,970 INFO L158 Benchmark]: RCFGBuilder took 3636.19ms. Allocated memory was 77.6MB in the beginning and 111.1MB in the end (delta: 33.6MB). Free memory was 38.0MB in the beginning and 68.9MB in the end (delta: -30.9MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,971 INFO L158 Benchmark]: TraceAbstraction took 9111.25ms. Allocated memory is still 111.1MB. Free memory was 68.3MB in the beginning and 55.4MB in the end (delta: 12.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,971 INFO L158 Benchmark]: Witness Printer took 120.19ms. Allocated memory is still 111.1MB. Free memory was 55.4MB in the beginning and 50.5MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:28:08,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.02ms. Allocated memory is still 77.6MB. Free memory was 54.7MB in the beginning and 42.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.85ms. Allocated memory is still 77.6MB. Free memory was 42.3MB in the beginning and 40.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.17ms. Allocated memory is still 77.6MB. Free memory was 40.3MB in the beginning and 38.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3636.19ms. Allocated memory was 77.6MB in the beginning and 111.1MB in the end (delta: 33.6MB). Free memory was 38.0MB in the beginning and 68.9MB in the end (delta: -30.9MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9111.25ms. Allocated memory is still 111.1MB. Free memory was 68.3MB in the beginning and 55.4MB in the end (delta: 12.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Witness Printer took 120.19ms. Allocated memory is still 111.1MB. Free memory was 55.4MB in the beginning and 50.5MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 47 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 23 NumberOfFragments, 27 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 4 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 32/38 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((counter == 1) || (counter == 0)) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:28:09,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0bea6-6990-4de8-b0f4-35b46450964d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE