./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:52:13,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:52:13,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:52:13,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:52:13,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:52:13,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:52:13,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:52:13,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:52:13,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:52:13,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:52:13,741 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:52:13,742 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:52:13,743 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:52:13,745 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:52:13,746 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:52:13,746 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:52:13,747 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:52:13,747 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:52:13,748 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:52:13,748 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:52:13,749 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:52:13,750 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:52:13,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:52:13,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:52:13,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:52:13,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:52:13,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:52:13,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:52:13,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:52:13,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:52:13,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:52:13,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:52:13,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:52:13,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:52:13,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:52:13,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:52:13,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:52:13,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:13,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:52:13,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:52:13,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:52:13,761 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:52:13,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:52:13,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:52:13,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:52:13,763 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:52:13,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:52:13,764 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_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2023-11-24 23:52:14,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:52:14,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:52:14,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:52:14,140 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:52:14,141 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:52:14,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2023-11-24 23:52:17,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:17,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:18,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2023-11-24 23:52:18,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/6719100f4/a7c2bacad0f742aaaa4d619e4e03fdf6/FLAGdab69c3a8 [2023-11-24 23:52:18,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/6719100f4/a7c2bacad0f742aaaa4d619e4e03fdf6 [2023-11-24 23:52:18,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:18,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:18,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:18,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:18,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:18,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:18" (1/1) ... [2023-11-24 23:52:18,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72756416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:18, skipping insertion in model container [2023-11-24 23:52:18,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:18" (1/1) ... [2023-11-24 23:52:18,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:18,916 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: fpclassify 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:2220) 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:1141) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:278) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2499) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) 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:2499) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) 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:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:178) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:665) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:536) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1491) 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: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:386) 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:3421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2441) 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) [2023-11-24 23:52:18,924 INFO L158 Benchmark]: Toolchain (without parser) took 879.94ms. Allocated memory is still 178.3MB. Free memory was 128.7MB in the beginning and 116.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:52:18,924 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:52:18,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 876.32ms. Allocated memory is still 178.3MB. Free memory was 128.7MB in the beginning and 117.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:52:18,928 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 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 876.32ms. Allocated memory is still 178.3MB. Free memory was 128.7MB in the beginning and 117.5MB in the end (delta: 11.2MB). 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: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:52:21,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:52:21,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:52:21,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:52:21,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:52:21,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:52:21,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:52:21,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:52:21,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:52:21,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:52:21,653 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:52:21,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:52:21,654 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:52:21,654 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:52:21,655 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:52:21,656 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:52:21,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:52:21,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:52:21,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:52:21,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:52:21,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:52:21,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:52:21,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:52:21,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:52:21,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:52:21,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:52:21,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:52:21,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:52:21,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:52:21,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:52:21,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:52:21,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:52:21,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:52:21,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:52:21,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:21,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:52:21,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:52:21,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:52:21,668 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:52:21,668 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:52:21,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:52:21,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:52:21,669 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:52:21,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:52:21,669 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_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2023-11-24 23:52:22,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:52:22,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:52:22,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:52:22,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:52:22,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:52:22,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2023-11-24 23:52:25,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:25,936 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:25,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2023-11-24 23:52:25,967 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/bf1fd54c2/20b97edc62d240639b3ed854fd348232/FLAG193e5b263 [2023-11-24 23:52:25,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/data/bf1fd54c2/20b97edc62d240639b3ed854fd348232 [2023-11-24 23:52:26,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:26,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:26,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:26,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:26,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:26,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:25" (1/1) ... [2023-11-24 23:52:26,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdd1160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:26, skipping insertion in model container [2023-11-24 23:52:26,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:25" (1/1) ... [2023-11-24 23:52:26,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:26,929 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2023-11-24 23:52:26,974 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2023-11-24 23:52:26,976 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2023-11-24 23:52:26,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:27,002 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:52:27,056 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2023-11-24 23:52:27,067 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2023-11-24 23:52:27,070 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2023-11-24 23:52:27,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:27,252 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:52:27,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27 WrapperNode [2023-11-24 23:52:27,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:27,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:27,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:52:27,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:52:27,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,345 INFO L138 Inliner]: procedures = 450, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 34 [2023-11-24 23:52:27,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:27,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:52:27,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:52:27,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:52:27,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:52:27,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:52:27,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:52:27,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:52:27,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (1/1) ... [2023-11-24 23:52:27,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:27,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:52:27,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:52:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:52:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:52:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:52:27,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:52:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:52:27,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:52:27,661 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:52:27,663 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:30,893 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:30,918 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:30,918 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:52:30,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:30 BoogieIcfgContainer [2023-11-24 23:52:30,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:30,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:30,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:30,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:30,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:52:25" (1/3) ... [2023-11-24 23:52:30,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114128a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:30, skipping insertion in model container [2023-11-24 23:52:30,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:27" (2/3) ... [2023-11-24 23:52:30,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114128a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:30, skipping insertion in model container [2023-11-24 23:52:30,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:30" (3/3) ... [2023-11-24 23:52:30,928 INFO L112 eAbstractionObserver]: Analyzing ICFG float-div1.i [2023-11-24 23:52:30,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:30,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 23:52:30,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:31,001 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=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;@7fe0c1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:31,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 23:52:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:52:31,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:31,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:31,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:31,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:31,034 INFO L85 PathProgramCache]: Analyzing trace with hash -445238460, now seen corresponding path program 1 times [2023-11-24 23:52:31,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:52:31,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335912019] [2023-11-24 23:52:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:31,047 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 [2023-11-24 23:52:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:52:31,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:52:31,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:52:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:31,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:52:31,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:31,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:31,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:52:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335912019] [2023-11-24 23:52:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335912019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:31,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:31,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303149857] [2023-11-24 23:52:31,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:31,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:52:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:52:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:52:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:31,607 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:31,788 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-11-24 23:52:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:52:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:52:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:31,800 INFO L225 Difference]: With dead ends: 40 [2023-11-24 23:52:31,800 INFO L226 Difference]: Without dead ends: 19 [2023-11-24 23:52:31,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:31,808 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:31,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-24 23:52:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-24 23:52:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-11-24 23:52:31,844 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2023-11-24 23:52:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:31,844 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-11-24 23:52:31,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:52:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-11-24 23:52:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:52:31,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:31,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:31,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:52:32,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:52:32,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:52:32,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash -387980158, now seen corresponding path program 1 times [2023-11-24 23:52:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:52:32,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670974707] [2023-11-24 23:52:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:32,050 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 [2023-11-24 23:52:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:52:32,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:52:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:52:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:32,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:52:32,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:50,352 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (and (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) |c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0#1|) (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_inductiveStepHunt_~startState#1|) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-11-24 23:53:09,857 WARN L854 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div roundNearestTiesToEven .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (fp.lt .cse1 |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) is different from false [2023-11-24 23:53:11,913 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div roundNearestTiesToEven .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (fp.lt .cse1 |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) is different from true [2023-11-24 23:53:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:11,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:11,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:53:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670974707] [2023-11-24 23:53:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670974707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:53:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217533095] [2023-11-24 23:53:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:53:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:53:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:53:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=27, Unknown=3, NotChecked=22, Total=72 [2023-11-24 23:53:11,918 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 9 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:53:14,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:53:16,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:53:18,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:53:20,358 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (and (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) |c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0#1|) (fp.lt .cse1 |ULTIMATE.start_inductiveStepHunt_~startState#1|) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) (= .cse0 |c_ULTIMATE.start_inductiveStepHunt_~target~0#1|) (not (fp.isInfinite |c_ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |c_ULTIMATE.start_inductiveStepHunt_~startState#1|)) (fp.lt .cse1 |c_ULTIMATE.start_inductiveStepHunt_~startState#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-11-24 23:53:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:21,125 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2023-11-24 23:53:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:53:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:53:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:21,127 INFO L225 Difference]: With dead ends: 23 [2023-11-24 23:53:21,127 INFO L226 Difference]: Without dead ends: 21 [2023-11-24 23:53:21,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=27, Invalid=37, Unknown=4, NotChecked=42, Total=110 [2023-11-24 23:53:21,129 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:21,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 43 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 2 Unknown, 46 Unchecked, 7.0s Time] [2023-11-24 23:53:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-24 23:53:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-24 23:53:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:53:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2023-11-24 23:53:21,136 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2023-11-24 23:53:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:21,137 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2023-11-24 23:53:21,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:53:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2023-11-24 23:53:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:53:21,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:21,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:21,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:53:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:53:21,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:21,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash -247934116, now seen corresponding path program 1 times [2023-11-24 23:53:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:53:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907560337] [2023-11-24 23:53:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:21,351 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 [2023-11-24 23:53:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:53:21,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:53:21,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc668f-0031-4ee7-99e1-04af7c100b35/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:53:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:21,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:53:21,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:53:22,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:22,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:53:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907560337] [2023-11-24 23:53:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907560337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:22,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:22,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882018075] [2023-11-24 23:53:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:22,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:53:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:22,120 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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)