./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 4fc63b2a 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_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:31:20,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:31:20,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:31:20,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:31:20,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:31:20,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:31:20,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:31:20,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:31:20,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:31:20,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:31:20,536 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:31:20,536 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:31:20,537 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:31:20,537 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:31:20,538 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:31:20,538 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:31:20,539 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:31:20,539 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:31:20,540 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:31:20,540 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:31:20,541 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:31:20,541 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:31:20,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:31:20,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:31:20,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:31:20,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:31:20,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:31:20,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:31:20,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:31:20,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:31:20,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:31:20,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:31:20,547 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:31:20,547 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:31:20,547 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:31:20,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:31:20,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:31:20,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:31:20,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:31:20,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:31:20,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:20,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:31:20,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:31:20,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:31:20,552 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:31:20,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:31:20,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:31:20,553 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:31:20,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:31:20,554 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2024-11-02 12:31:20,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:31:20,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:31:20,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:31:20,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:31:20,924 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:31:20,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i Unable to find full path for "g++" [2024-11-02 12:31:23,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:31:23,343 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:31:23,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2024-11-02 12:31:23,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/3b6b1d281/057cb6cf9d744ab2b5c7d3bb38305d25/FLAGa8ab8118c [2024-11-02 12:31:23,727 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/3b6b1d281/057cb6cf9d744ab2b5c7d3bb38305d25 [2024-11-02 12:31:23,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:31:23,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:31:23,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:23,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:31:23,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:31:23,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:23" (1/1) ... [2024-11-02 12:31:23,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514cdaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:23, skipping insertion in model container [2024-11-02 12:31:23,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:23" (1/1) ... [2024-11-02 12:31:23,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:31:24,045 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:627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:3126) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:256) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1584) 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:789) 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:1492) 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:1148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1131) 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:387) 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:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3458) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2482) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:639) 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) [2024-11-02 12:31:24,053 INFO L158 Benchmark]: Toolchain (without parser) took 317.25ms. Allocated memory is still 130.0MB. Free memory was 80.8MB in the beginning and 70.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:31:24,054 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:31:24,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.09ms. Allocated memory is still 130.0MB. Free memory was 80.7MB in the beginning and 70.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:31:24,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.09ms. Allocated memory is still 130.0MB. Free memory was 80.7MB in the beginning and 70.2MB in the end (delta: 10.4MB). 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:627) 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_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:31:26,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:31:26,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2024-11-02 12:31:26,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:31:26,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:31:26,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:31:26,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:31:26,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:31:26,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:31:26,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:31:26,595 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:31:26,595 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:31:26,595 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:31:26,596 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:31:26,596 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:31:26,596 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:31:26,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:31:26,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:31:26,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:31:26,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:31:26,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:31:26,605 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:31:26,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:31:26,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:31:26,606 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:31:26,606 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:31:26,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:31:26,607 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:31:26,607 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:31:26,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:31:26,608 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:31:26,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:31:26,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:31:26,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:31:26,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:31:26,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:31:26,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:31:26,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:26,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:31:26,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:31:26,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:31:26,613 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:31:26,613 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:31:26,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:31:26,614 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:31:26,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:31:26,614 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2024-11-02 12:31:27,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:31:27,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:31:27,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:31:27,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:31:27,075 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:31:27,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i Unable to find full path for "g++" [2024-11-02 12:31:29,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:31:29,610 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:31:29,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2024-11-02 12:31:29,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/d97fae38a/8f38407ad15a45c48680cf0d81875ee8/FLAG1c78c3077 [2024-11-02 12:31:29,900 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/data/d97fae38a/8f38407ad15a45c48680cf0d81875ee8 [2024-11-02 12:31:29,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:31:29,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:31:29,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:29,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:31:29,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:31:29,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:29" (1/1) ... [2024-11-02 12:31:29,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af29019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:29, skipping insertion in model container [2024-11-02 12:31:29,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:29" (1/1) ... [2024-11-02 12:31:29,959 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:31:30,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:30,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:31:30,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:30,444 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:31:30,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30 WrapperNode [2024-11-02 12:31:30,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:30,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:30,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:31:30,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:31:30,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,503 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-11-02 12:31:30,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:30,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:31:30,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:31:30,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:31:30,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,541 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:31:30,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:31:30,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:31:30,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:31:30,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (1/1) ... [2024-11-02 12:31:30,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:30,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:30,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:31:30,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:31:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:31:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:31:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:31:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:31:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:31:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:31:30,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:31:30,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:31:30,728 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:31:30,731 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:31:33,760 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-02 12:31:33,760 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:31:33,773 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:31:33,774 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:31:33,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:33 BoogieIcfgContainer [2024-11-02 12:31:33,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:31:33,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:31:33,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:31:33,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:31:33,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:31:29" (1/3) ... [2024-11-02 12:31:33,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4f7c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:33, skipping insertion in model container [2024-11-02 12:31:33,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:30" (2/3) ... [2024-11-02 12:31:33,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4f7c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:33, skipping insertion in model container [2024-11-02 12:31:33,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:33" (3/3) ... [2024-11-02 12:31:33,793 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound1.i [2024-11-02 12:31:33,815 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:31:33,815 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:31:33,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:31:33,903 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;@1179622b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:31:33,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:31:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 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) [2024-11-02 12:31:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:31:33,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:33,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:33,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 12:31:33,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1741385281, now seen corresponding path program 1 times [2024-11-02 12:31:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:31:33,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657666457] [2024-11-02 12:31:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:33,934 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 [2024-11-02 12:31:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:31:33,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:31:33,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:34,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 12:31:34,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:34,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:34,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:31:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657666457] [2024-11-02 12:31:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657666457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:34,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:34,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316593604] [2024-11-02 12:31:34,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:34,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:31:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:31:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:31:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:31:34,361 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 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, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:31:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:34,389 INFO L93 Difference]: Finished difference Result 63 states and 93 transitions. [2024-11-02 12:31:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:31:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-02 12:31:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:34,401 INFO L225 Difference]: With dead ends: 63 [2024-11-02 12:31:34,402 INFO L226 Difference]: Without dead ends: 26 [2024-11-02 12:31:34,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:31:34,411 INFO L432 NwaCegarLoop]: 40 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, 40 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 [2024-11-02 12:31:34,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-02 12:31:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-02 12:31:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-02 12:31:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-02 12:31:34,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 15 [2024-11-02 12:31:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:34,449 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-02 12:31:34,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:31:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-02 12:31:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:31:34,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:34,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:34,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:34,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:34,652 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 12:31:34,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash -410163315, now seen corresponding path program 1 times [2024-11-02 12:31:34,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:31:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651315544] [2024-11-02 12:31:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:34,654 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 [2024-11-02 12:31:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:31:34,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:31:34,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:34,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:31:34,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:31:35,610 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:35,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:31:35,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651315544] [2024-11-02 12:31:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651315544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:35,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093246601] [2024-11-02 12:31:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:35,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:35,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:31:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:35,615 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:31:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:35,957 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-02 12:31:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 16 [2024-11-02 12:31:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:35,959 INFO L225 Difference]: With dead ends: 31 [2024-11-02 12:31:35,959 INFO L226 Difference]: Without dead ends: 30 [2024-11-02 12:31:35,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:35,961 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:35,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:31:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-02 12:31:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-02 12:31:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-11-02 12:31:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-02 12:31:35,971 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2024-11-02 12:31:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:35,972 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-02 12:31:35,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:31:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-02 12:31:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:31:35,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:35,974 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:35,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:31:36,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:36,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 12:31:36,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1864935099, now seen corresponding path program 1 times [2024-11-02 12:31:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:31:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611078643] [2024-11-02 12:31:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:36,181 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 [2024-11-02 12:31:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:31:36,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:31:36,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:31:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:36,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:31:36,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:38,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:40,543 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:31:40,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611078643] [2024-11-02 12:31:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611078643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:40,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032246190] [2024-11-02 12:31:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:40,544 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:31:40,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:31:40,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:31:40,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-02 12:31:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:46,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:31:46,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:47,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1032246190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842733598] [2024-11-02 12:31:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:49,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:49,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:49,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:31:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:51,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:31:51,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:52,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 12:31:54,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842733598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:54,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-02 12:31:54,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 9 [2024-11-02 12:31:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278608576] [2024-11-02 12:31:54,036 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-02 12:31:54,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:31:54,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:31:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:31:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:31:54,039 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-02 12:31:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:56,254 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2024-11-02 12:31:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:31:56,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 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 42 [2024-11-02 12:31:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:56,257 INFO L225 Difference]: With dead ends: 46 [2024-11-02 12:31:56,257 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:31:56,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:31:56,259 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:56,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 97 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-02 12:31:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:31:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:31:56,266 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) [2024-11-02 12:31:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:31:56,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2024-11-02 12:31:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:56,267 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:31:56,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-02 12:31:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:31:56,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:31:56,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-02 12:31:56,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-02 12:31:56,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:31:56,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-02 12:31:56,872 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2024-11-02 12:31:56,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 12:31:56,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:56,894 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-02 12:31:56,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:31:57,486 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:31:57,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:31:57 BoogieIcfgContainer [2024-11-02 12:31:57,513 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:31:57,514 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:31:57,514 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:31:57,514 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:31:57,516 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:33" (3/4) ... [2024-11-02 12:31:57,519 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:31:57,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-02 12:31:57,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-02 12:31:57,527 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-02 12:31:57,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-02 12:31:57,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-02 12:31:57,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:31:57,530 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:31:57,641 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:31:57,642 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:31:57,642 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:31:57,643 INFO L158 Benchmark]: Toolchain (without parser) took 27738.70ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 40.8MB in the beginning and 55.2MB in the end (delta: -14.4MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,643 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 65.0MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:31:57,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.28ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 40.6MB in the beginning and 58.5MB in the end (delta: -17.9MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.02ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,644 INFO L158 Benchmark]: Boogie Preprocessor took 52.46ms. Allocated memory is still 81.8MB. Free memory was 56.8MB in the beginning and 55.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,645 INFO L158 Benchmark]: RCFGBuilder took 3212.90ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 38.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,645 INFO L158 Benchmark]: TraceAbstraction took 23727.75ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 30.5MB in the end (delta: 29.2MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,646 INFO L158 Benchmark]: Witness Printer took 128.31ms. Allocated memory is still 81.8MB. Free memory was 30.5MB in the beginning and 55.2MB in the end (delta: -24.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:31:57,648 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 65.0MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.28ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 40.6MB in the beginning and 58.5MB in the end (delta: -17.9MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.02ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.46ms. Allocated memory is still 81.8MB. Free memory was 56.8MB in the beginning and 55.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3212.90ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 38.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 23727.75ms. Allocated memory is still 81.8MB. Free memory was 59.7MB in the beginning and 30.5MB in the end (delta: 29.2MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 128.31ms. Allocated memory is still 81.8MB. Free memory was 30.5MB in the beginning and 55.2MB in the end (delta: -24.7MB). Peak memory consumption was 2.1MB. 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, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 23.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 213 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 97 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 10 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 176/194 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: ((1 == counter) || (0 == counter)) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (0 == counter) Ensures: ((0 == counter) && (counter == \old(counter))) - ProcedureContractResult [Line: 18]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 == counter) Ensures: ((1 == counter) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:31:57,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46047eb-dcee-4fc4-84f5-86383a78bf38/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE