./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje --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 2e1f602a9fcbe8d5fc3b015c5cb6f17c1c87f3c804523b4ad2e967e82117e632 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:56:58,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:56:59,021 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:56:59,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:56:59,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:56:59,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:56:59,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:56:59,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:56:59,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:56:59,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:56:59,051 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:56:59,052 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:56:59,052 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:56:59,053 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:56:59,053 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:56:59,054 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:56:59,054 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:56:59,056 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:56:59,057 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:56:59,057 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:56:59,058 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:56:59,062 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:56:59,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:56:59,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:56:59,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:56:59,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:56:59,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:56:59,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:56:59,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:56:59,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:56:59,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:56:59,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:56:59,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:56:59,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:56:59,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:56:59,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:56:59,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:56:59,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:56:59,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:56:59,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:56:59,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:56:59,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:56:59,084 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:56:59,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:56:59,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:56:59,086 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:56:59,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:56:59,087 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_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e1f602a9fcbe8d5fc3b015c5cb6f17c1c87f3c804523b4ad2e967e82117e632 [2024-11-09 06:56:59,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:56:59,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:56:59,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:56:59,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:56:59,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:56:59,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:57:01,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:57:01,987 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:57:01,987 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:57:02,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/302e0eb99/4c9cb21e7994452abb2da37a34189939/FLAGab4b187c2 [2024-11-09 06:57:02,130 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/302e0eb99/4c9cb21e7994452abb2da37a34189939 [2024-11-09 06:57:02,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:57:02,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:57:02,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:57:02,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:57:02,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:57:02,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:57:02" (1/1) ... [2024-11-09 06:57:02,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a28e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:02, skipping insertion in model container [2024-11-09 06:57:02,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:57:02" (1/1) ... [2024-11-09 06:57:02,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:57:03,523 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i[71669,71682] [2024-11-09 06:57:03,878 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: fabs 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:3125) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:255) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1625) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:271) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2578) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:307) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1520) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:224) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1167) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1150) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleLoopBody(CHandler.java:3634) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1577) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:227) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1167) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1150) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1652) 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:3539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2522) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:642) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:189) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:116) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:145) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 06:57:03,887 INFO L158 Benchmark]: Toolchain (without parser) took 1747.39ms. Allocated memory is still 155.2MB. Free memory was 109.1MB in the beginning and 73.5MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-09 06:57:03,887 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 155.2MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:57:03,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1742.91ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 73.5MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-09 06:57:03,890 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 155.2MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1742.91ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 73.5MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. 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: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: 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_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje --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 2e1f602a9fcbe8d5fc3b015c5cb6f17c1c87f3c804523b4ad2e967e82117e632 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:57:06,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:57:06,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 06:57:06,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:57:06,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:57:06,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:57:06,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:57:06,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:57:06,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:57:06,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:57:06,244 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:57:06,244 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:57:06,244 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:57:06,245 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:57:06,249 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:57:06,249 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:57:06,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:57:06,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:57:06,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:57:06,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:57:06,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:57:06,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:57:06,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:57:06,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:57:06,252 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:57:06,252 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:57:06,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:57:06,253 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:57:06,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:57:06,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:57:06,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:57:06,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:57:06,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:57:06,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:57:06,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:57:06,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:57:06,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:57:06,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:57:06,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:57:06,257 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:57:06,257 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:57:06,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:57:06,260 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:57:06,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e1f602a9fcbe8d5fc3b015c5cb6f17c1c87f3c804523b4ad2e967e82117e632 [2024-11-09 06:57:06,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:57:06,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:57:06,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:57:06,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:57:06,674 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:57:06,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:57:08,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:57:09,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:57:09,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:57:09,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/78577e05e/99ad9152aece4c70923d586eda3e9e4e/FLAGa0a8fd029 [2024-11-09 06:57:09,294 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/data/78577e05e/99ad9152aece4c70923d586eda3e9e4e [2024-11-09 06:57:09,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:57:09,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:57:09,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:57:09,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:57:09,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:57:09,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:57:09" (1/1) ... [2024-11-09 06:57:09,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d17e771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:09, skipping insertion in model container [2024-11-09 06:57:09,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:57:09" (1/1) ... [2024-11-09 06:57:09,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:57:10,644 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i[71669,71682] [2024-11-09 06:57:11,047 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:57:11,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:57:11,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:57:11,262 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/sv-benchmarks/c/neural-networks/tanh_w8_r1_case_0_unsafe.c-amalgamation.i[71669,71682] [2024-11-09 06:57:11,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:57:11,742 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:57:11,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11 WrapperNode [2024-11-09 06:57:11,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:57:11,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:57:11,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:57:11,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:57:11,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:11,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:11,939 INFO L138 Inliner]: procedures = 780, calls = 1169, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 548 [2024-11-09 06:57:11,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:57:11,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:57:11,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:57:11,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:57:11,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:11,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:11,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:11,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:57:12,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:57:12,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:57:12,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:57:12,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (1/1) ... [2024-11-09 06:57:12,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:57:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:57:12,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:57:12,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:57:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2024-11-09 06:57:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNN [2024-11-09 06:57:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNN [2024-11-09 06:57:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2024-11-09 06:57:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:57:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:57:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:57:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:57:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:57:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:57:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:57:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_affine_matmul [2024-11-09 06:57:12,146 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_affine_matmul [2024-11-09 06:57:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:57:12,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:57:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:57:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:57:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 06:57:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2024-11-09 06:57:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNNcell [2024-11-09 06:57:12,149 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNNcell [2024-11-09 06:57:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 06:57:12,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2024-11-09 06:57:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:57:12,427 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:57:12,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:57:23,632 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2024-11-09 06:57:23,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:57:23,654 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:57:23,654 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:57:23,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:57:23 BoogieIcfgContainer [2024-11-09 06:57:23,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:57:23,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:57:23,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:57:23,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:57:23,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:57:09" (1/3) ... [2024-11-09 06:57:23,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc92f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:57:23, skipping insertion in model container [2024-11-09 06:57:23,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:57:11" (2/3) ... [2024-11-09 06:57:23,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc92f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:57:23, skipping insertion in model container [2024-11-09 06:57:23,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:57:23" (3/3) ... [2024-11-09 06:57:23,667 INFO L112 eAbstractionObserver]: Analyzing ICFG tanh_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:57:23,689 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:57:23,689 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:57:23,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:57:23,783 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;@2b666412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:57:23,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:57:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 125 states have (on average 1.52) internal successors, (190), 126 states have internal predecessors, (190), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:57:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:57:23,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:23,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:23,801 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:23,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1543902457, now seen corresponding path program 1 times [2024-11-09 06:57:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:23,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381661896] [2024-11-09 06:57:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:23,834 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 [2024-11-09 06:57:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:23,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:23,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:28,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 06:57:28,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:57:28,419 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:28,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381661896] [2024-11-09 06:57:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381661896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:28,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:28,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:57:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358597508] [2024-11-09 06:57:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:28,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:57:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:57:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:57:28,466 INFO L87 Difference]: Start difference. First operand has 139 states, 125 states have (on average 1.52) internal successors, (190), 126 states have internal predecessors, (190), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-11-09 06:57:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:28,537 INFO L93 Difference]: Finished difference Result 274 states and 402 transitions. [2024-11-09 06:57:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:57:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 23 [2024-11-09 06:57:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:28,554 INFO L225 Difference]: With dead ends: 274 [2024-11-09 06:57:28,554 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 06:57:28,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:57:28,568 INFO L432 NwaCegarLoop]: 200 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, 200 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 [2024-11-09 06:57:28,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:57:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 06:57:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-09 06:57:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 122 states have (on average 1.4918032786885247) internal successors, (182), 122 states have internal predecessors, (182), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:57:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 196 transitions. [2024-11-09 06:57:28,641 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 196 transitions. Word has length 23 [2024-11-09 06:57:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:28,646 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 196 transitions. [2024-11-09 06:57:28,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-11-09 06:57:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 196 transitions. [2024-11-09 06:57:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:57:28,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:28,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:28,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:28,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:28,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:28,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash -862093895, now seen corresponding path program 1 times [2024-11-09 06:57:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023627316] [2024-11-09 06:57:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:28,855 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 [2024-11-09 06:57:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:28,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:28,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:32,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:57:32,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:57:33,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:33,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023627316] [2024-11-09 06:57:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023627316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:33,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:33,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:57:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883037393] [2024-11-09 06:57:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:33,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:57:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:33,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:57:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:57:33,040 INFO L87 Difference]: Start difference. First operand 135 states and 196 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 06:57:35,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:57:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:35,130 INFO L93 Difference]: Finished difference Result 267 states and 388 transitions. [2024-11-09 06:57:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:57:35,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 23 [2024-11-09 06:57:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:35,132 INFO L225 Difference]: With dead ends: 267 [2024-11-09 06:57:35,133 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 06:57:35,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:57:35,135 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:35,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 06:57:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 06:57:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-09 06:57:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 122 states have (on average 1.4836065573770492) internal successors, (181), 122 states have internal predecessors, (181), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:57:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2024-11-09 06:57:35,149 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 23 [2024-11-09 06:57:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:35,149 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2024-11-09 06:57:35,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 06:57:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2024-11-09 06:57:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:57:35,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:35,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:35,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:35,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:35,352 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:35,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1284795721, now seen corresponding path program 1 times [2024-11-09 06:57:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753899093] [2024-11-09 06:57:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:35,355 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 [2024-11-09 06:57:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:35,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:35,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:39,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:57:39,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:57:39,777 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:57:39,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:57:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753899093] [2024-11-09 06:57:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753899093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:57:39,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:57:39,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:57:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355564946] [2024-11-09 06:57:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:57:39,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:57:39,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:57:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:57:39,785 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-09 06:57:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:39,999 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2024-11-09 06:57:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:57:40,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 23 [2024-11-09 06:57:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:40,004 INFO L225 Difference]: With dead ends: 146 [2024-11-09 06:57:40,004 INFO L226 Difference]: Without dead ends: 125 [2024-11-09 06:57:40,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:57:40,006 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 19 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:40,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 748 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:57:40,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-09 06:57:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-09 06:57:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 113 states have (on average 1.4690265486725664) internal successors, (166), 113 states have internal predecessors, (166), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:57:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2024-11-09 06:57:40,019 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 23 [2024-11-09 06:57:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:40,019 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2024-11-09 06:57:40,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-09 06:57:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2024-11-09 06:57:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:57:40,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:40,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:40,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:40,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:57:40,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:57:40,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1937273746, now seen corresponding path program 1 times [2024-11-09 06:57:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105387554] [2024-11-09 06:57:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:40,225 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 [2024-11-09 06:57:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:40,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:57:40,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 06:58:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:10,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-09 06:58:10,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:10,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:58:10,980 INFO L224 Elim1Store]: Index analysis took 152 ms [2024-11-09 06:58:11,490 INFO L349 Elim1Store]: treesize reduction 83, result has 18.6 percent of original size [2024-11-09 06:58:11,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2024-11-09 06:58:11,812 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-09 06:58:11,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 50 [2024-11-09 06:58:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:58:12,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:58:12,431 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2024-11-09 06:58:12,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 22 [2024-11-09 06:58:12,552 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:58:12,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2024-11-09 06:58:14,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:58:14,772 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2024-11-09 06:58:14,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 104 [2024-11-09 06:58:14,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 36 [2024-11-09 06:58:15,002 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:58:15,027 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-09 06:58:15,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 1 [2024-11-09 06:58:15,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:58:15,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2024-11-09 06:58:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:58:15,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:58:15,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105387554] [2024-11-09 06:58:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105387554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:58:15,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:58:15,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:58:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162344091] [2024-11-09 06:58:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:58:15,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:58:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:58:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:58:15,765 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-09 06:58:17,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:58:19,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:22,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:23,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:25,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:58:28,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:32,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:34,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:36,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:58:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:58:43,226 INFO L93 Difference]: Finished difference Result 215 states and 314 transitions. [2024-11-09 06:58:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:58:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 23 [2024-11-09 06:58:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:58:43,232 INFO L225 Difference]: With dead ends: 215 [2024-11-09 06:58:43,232 INFO L226 Difference]: Without dead ends: 207 [2024-11-09 06:58:43,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:58:43,234 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 129 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:58:43,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 567 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 6 Unknown, 0 Unchecked, 27.4s Time] [2024-11-09 06:58:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-09 06:58:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2024-11-09 06:58:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 183 states have (on average 1.469945355191257) internal successors, (269), 185 states have internal predecessors, (269), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 06:58:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 295 transitions. [2024-11-09 06:58:43,257 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 295 transitions. Word has length 23 [2024-11-09 06:58:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:58:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 295 transitions. [2024-11-09 06:58:43,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-09 06:58:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 295 transitions. [2024-11-09 06:58:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:58:43,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:58:43,259 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:58:43,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:58:43,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:43,460 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:58:43,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:58:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1711980502, now seen corresponding path program 1 times [2024-11-09 06:58:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:58:43,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538645631] [2024-11-09 06:58:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:43,463 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 [2024-11-09 06:58:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:58:43,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:58:43,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (6)] Waiting until timeout for monitored process [2024-11-09 06:58:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:47,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:58:47,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:58:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:58:48,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:58:48,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:48,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538645631] [2024-11-09 06:58:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538645631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:58:48,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:58:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:58:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184941897] [2024-11-09 06:58:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:58:48,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:58:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:58:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:58:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:58:48,609 INFO L87 Difference]: Start difference. First operand 202 states and 295 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-09 06:58:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:58:49,711 INFO L93 Difference]: Finished difference Result 408 states and 603 transitions. [2024-11-09 06:58:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:58:49,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 27 [2024-11-09 06:58:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:58:49,714 INFO L225 Difference]: With dead ends: 408 [2024-11-09 06:58:49,714 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 06:58:49,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:58:49,718 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 22 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:58:49,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 686 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:58:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 06:58:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-09 06:58:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 176 states have (on average 1.4488636363636365) internal successors, (255), 178 states have internal predecessors, (255), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 06:58:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 281 transitions. [2024-11-09 06:58:49,746 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 281 transitions. Word has length 27 [2024-11-09 06:58:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:58:49,746 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 281 transitions. [2024-11-09 06:58:49,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-09 06:58:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 281 transitions. [2024-11-09 06:58:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 06:58:49,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:58:49,751 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:58:49,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:58:49,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:58:49,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:58:49,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:58:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1658345540, now seen corresponding path program 1 times [2024-11-09 06:58:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:58:49,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94375099] [2024-11-09 06:58:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:49,954 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 [2024-11-09 06:58:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:58:49,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:58:49,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (7)] Waiting until timeout for monitored process [2024-11-09 06:58:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:58:54,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:58:54,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:59:03,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:59:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:59:37,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:59:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94375099] [2024-11-09 06:59:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94375099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:59:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1339145664] [2024-11-09 06:59:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:59:37,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:59:37,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:59:37,158 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:59:37,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 06:59:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:59:41,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:59:41,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:59:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 06:59:57,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:00:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1339145664] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:00:18,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:00:18,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-09 07:00:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762740576] [2024-11-09 07:00:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:00:18,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:00:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:00:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:00:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=891, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:00:18,149 INFO L87 Difference]: Start difference. First operand 195 states and 281 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:00:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:00:27,708 INFO L93 Difference]: Finished difference Result 238 states and 345 transitions. [2024-11-09 07:00:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:00:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 72 [2024-11-09 07:00:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:00:27,714 INFO L225 Difference]: With dead ends: 238 [2024-11-09 07:00:27,714 INFO L226 Difference]: Without dead ends: 187 [2024-11-09 07:00:27,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=130, Invalid=1200, Unknown=2, NotChecked=0, Total=1332 [2024-11-09 07:00:27,716 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 207 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:00:27,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 904 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 07:00:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-09 07:00:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-11-09 07:00:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 168 states have (on average 1.4404761904761905) internal successors, (242), 170 states have internal predecessors, (242), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 07:00:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 268 transitions. [2024-11-09 07:00:27,736 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 268 transitions. Word has length 72 [2024-11-09 07:00:27,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:00:27,736 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 268 transitions. [2024-11-09 07:00:27,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:00:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 268 transitions. [2024-11-09 07:00:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 07:00:27,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:00:27,745 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:00:27,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:00:27,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-09 07:00:28,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:00:28,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:00:28,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:00:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash -509944617, now seen corresponding path program 1 times [2024-11-09 07:00:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:00:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962628687] [2024-11-09 07:00:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:28,149 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 [2024-11-09 07:00:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:00:28,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:00:28,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (9)] Waiting until timeout for monitored process [2024-11-09 07:00:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:32,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:00:32,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:00:40,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:01:11,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:01:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962628687] [2024-11-09 07:01:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962628687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:01:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2035565052] [2024-11-09 07:01:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:01:11,589 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:01:11,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 07:01:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:16,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:01:16,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:01:31,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:01:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2035565052] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:01:51,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:01:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-09 07:01:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487927326] [2024-11-09 07:01:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:01:51,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:01:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:01:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:01:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=892, Unknown=1, NotChecked=0, Total=992 [2024-11-09 07:01:51,461 INFO L87 Difference]: Start difference. First operand 187 states and 268 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:02:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:02:00,409 INFO L93 Difference]: Finished difference Result 230 states and 332 transitions. [2024-11-09 07:02:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:02:00,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 73 [2024-11-09 07:02:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:02:00,414 INFO L225 Difference]: With dead ends: 230 [2024-11-09 07:02:00,414 INFO L226 Difference]: Without dead ends: 179 [2024-11-09 07:02:00,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=130, Invalid=1201, Unknown=1, NotChecked=0, Total=1332 [2024-11-09 07:02:00,416 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 203 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:02:00,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 722 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 07:02:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-09 07:02:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-09 07:02:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 160 states have (on average 1.43125) internal successors, (229), 162 states have internal predecessors, (229), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 07:02:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 255 transitions. [2024-11-09 07:02:00,436 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 255 transitions. Word has length 73 [2024-11-09 07:02:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:02:00,437 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 255 transitions. [2024-11-09 07:02:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:02:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 255 transitions. [2024-11-09 07:02:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 07:02:00,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:02:00,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:02:00,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-09 07:02:00,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:02:00,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:02:00,845 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:02:00,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:02:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1022018443, now seen corresponding path program 1 times [2024-11-09 07:02:00,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:02:00,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346174097] [2024-11-09 07:02:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:00,847 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 [2024-11-09 07:02:00,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:02:00,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:02:00,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (11)] Waiting until timeout for monitored process [2024-11-09 07:02:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:04,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:02:04,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:02:13,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:02:48,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:02:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346174097] [2024-11-09 07:02:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346174097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:02:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551661819] [2024-11-09 07:02:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:48,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:02:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:02:48,734 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:02:48,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 07:02:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:53,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:02:53,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:03:09,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:03:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:03:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1551661819] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:03:29,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:03:29,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-09 07:03:29,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351997761] [2024-11-09 07:03:29,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:03:29,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:03:29,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:03:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:03:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=890, Unknown=3, NotChecked=0, Total=992 [2024-11-09 07:03:29,484 INFO L87 Difference]: Start difference. First operand 179 states and 255 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:03:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:37,549 INFO L93 Difference]: Finished difference Result 222 states and 319 transitions. [2024-11-09 07:03:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:03:37,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 75 [2024-11-09 07:03:37,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:37,554 INFO L225 Difference]: With dead ends: 222 [2024-11-09 07:03:37,554 INFO L226 Difference]: Without dead ends: 171 [2024-11-09 07:03:37,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=130, Invalid=1199, Unknown=3, NotChecked=0, Total=1332 [2024-11-09 07:03:37,556 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 200 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:37,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 563 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 07:03:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-09 07:03:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-09 07:03:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 152 states have (on average 1.4210526315789473) internal successors, (216), 154 states have internal predecessors, (216), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 07:03:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 242 transitions. [2024-11-09 07:03:37,575 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 242 transitions. Word has length 75 [2024-11-09 07:03:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:37,575 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 242 transitions. [2024-11-09 07:03:37,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:03:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 242 transitions. [2024-11-09 07:03:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 07:03:37,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:37,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:37,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:37,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:37,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:03:37,979 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:03:37,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:37,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1012515996, now seen corresponding path program 1 times [2024-11-09 07:03:37,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:37,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988200117] [2024-11-09 07:03:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:37,981 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 [2024-11-09 07:03:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:37,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:03:37,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (13)] Waiting until timeout for monitored process [2024-11-09 07:03:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:42,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:03:42,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:03:50,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:04:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:04:24,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:04:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988200117] [2024-11-09 07:04:24,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988200117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:04:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610227386] [2024-11-09 07:04:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:24,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:04:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:04:24,806 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:04:24,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-09 07:04:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:30,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:04:30,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:04:36,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:04:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610227386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:36,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:04:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13] total 24 [2024-11-09 07:04:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877331360] [2024-11-09 07:04:36,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:36,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:04:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=482, Unknown=2, NotChecked=0, Total=552 [2024-11-09 07:04:36,069 INFO L87 Difference]: Start difference. First operand 171 states and 242 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:04:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:37,133 INFO L93 Difference]: Finished difference Result 347 states and 505 transitions. [2024-11-09 07:04:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 76 [2024-11-09 07:04:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:37,136 INFO L225 Difference]: With dead ends: 347 [2024-11-09 07:04:37,136 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 07:04:37,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=68, Invalid=482, Unknown=2, NotChecked=0, Total=552 [2024-11-09 07:04:37,138 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 44 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:37,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 558 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:04:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 07:04:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 175. [2024-11-09 07:04:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 156 states have (on average 1.4102564102564104) internal successors, (220), 158 states have internal predecessors, (220), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 07:04:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 246 transitions. [2024-11-09 07:04:37,160 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 246 transitions. Word has length 76 [2024-11-09 07:04:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:37,160 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 246 transitions. [2024-11-09 07:04:37,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:04:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 246 transitions. [2024-11-09 07:04:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 07:04:37,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:37,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:37,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2024-11-09 07:04:37,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (13)] Ended with exit code 0 [2024-11-09 07:04:37,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:04:37,564 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:37,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -522521302, now seen corresponding path program 1 times [2024-11-09 07:04:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:04:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77240155] [2024-11-09 07:04:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:37,566 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 [2024-11-09 07:04:37,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:04:37,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:04:37,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (15)] Waiting until timeout for monitored process [2024-11-09 07:04:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:42,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:04:42,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:04:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:04:51,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:05:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:05:24,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:05:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77240155] [2024-11-09 07:05:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77240155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:05:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [845450822] [2024-11-09 07:05:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:05:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:05:24,139 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:05:24,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-09 07:05:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:33,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:05:33,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:05:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:05:43,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:05:59,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [845450822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:05:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8188221] [2024-11-09 07:05:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:59,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:05:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:05:59,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:05:59,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:06:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:03,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:06:03,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 07:06:11,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:06:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 07:06:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8188221] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:06:26,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 07:06:26,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13, 11, 7] total 32 [2024-11-09 07:06:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733045618] [2024-11-09 07:06:26,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:26,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:06:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:06:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:06:26,414 INFO L87 Difference]: Start difference. First operand 175 states and 246 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:06:28,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:30,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:33,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:38,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:40,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:43,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:45,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:47,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:50,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:51,724 INFO L93 Difference]: Finished difference Result 210 states and 296 transitions. [2024-11-09 07:06:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:06:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2024-11-09 07:06:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:51,731 INFO L225 Difference]: With dead ends: 210 [2024-11-09 07:06:51,732 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 07:06:51,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:06:51,734 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 104 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:51,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 457 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 6 Unknown, 0 Unchecked, 23.5s Time] [2024-11-09 07:06:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 07:06:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 115. [2024-11-09 07:06:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 103 states have internal predecessors, (142), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:06:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2024-11-09 07:06:51,783 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 84 [2024-11-09 07:06:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:51,784 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2024-11-09 07:06:51,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:06:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2024-11-09 07:06:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 07:06:51,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:51,786 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:51,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-09 07:06:52,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (15)] Forceful destruction successful, exit code 0 [2024-11-09 07:06:52,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 07:06:52,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:06:52,387 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:06:52,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash -135356251, now seen corresponding path program 1 times [2024-11-09 07:06:52,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:52,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766673242] [2024-11-09 07:06:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:52,392 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 [2024-11-09 07:06:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:52,394 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:06:52,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (18)] Waiting until timeout for monitored process [2024-11-09 07:06:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:57,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:06:57,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:07:08,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:07:48,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:07:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766673242] [2024-11-09 07:07:48,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766673242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [352421245] [2024-11-09 07:07:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:07:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:07:48,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:07:48,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-09 07:07:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:57,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:07:57,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:08:06,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:08:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [352421245] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:28,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:08:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 13, 9] total 30 [2024-11-09 07:08:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186498949] [2024-11-09 07:08:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:28,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:08:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:08:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:08:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:08:28,331 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:08:30,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:32,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:34,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:36,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:39,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:41,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:44,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:54,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:09:01,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:09:03,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:09:06,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:09:12,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:09:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:14,532 INFO L93 Difference]: Finished difference Result 175 states and 239 transitions. [2024-11-09 07:09:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:09:14,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 85 [2024-11-09 07:09:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:14,537 INFO L225 Difference]: With dead ends: 175 [2024-11-09 07:09:14,537 INFO L226 Difference]: Without dead ends: 156 [2024-11-09 07:09:14,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 07:09:14,539 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 157 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 19 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:14,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 752 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 243 Invalid, 10 Unknown, 0 Unchecked, 40.8s Time] [2024-11-09 07:09:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-09 07:09:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 120. [2024-11-09 07:09:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 108 states have internal predecessors, (146), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 07:09:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 161 transitions. [2024-11-09 07:09:14,559 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 161 transitions. Word has length 85 [2024-11-09 07:09:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:14,560 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 161 transitions. [2024-11-09 07:09:14,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 07:09:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 161 transitions. [2024-11-09 07:09:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 07:09:14,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:14,562 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:14,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-09 07:09:14,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (18)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:14,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:09:14,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:14,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1531894250, now seen corresponding path program 1 times [2024-11-09 07:09:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:09:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949435044] [2024-11-09 07:09:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:14,968 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 [2024-11-09 07:09:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:09:14,971 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:09:14,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (20)] Waiting until timeout for monitored process [2024-11-09 07:09:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:20,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:09:20,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:09:33,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:10:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:10:17,808 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:10:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949435044] [2024-11-09 07:10:17,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949435044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:10:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [651308921] [2024-11-09 07:10:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:10:17,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:10:17,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:10:17,811 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:10:17,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 07:10:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:10:26,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:10:26,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:10:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 07:10:35,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:10:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 07:10:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [651308921] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:10:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:10:50,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13, 6] total 26 [2024-11-09 07:10:50,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184604990] [2024-11-09 07:10:50,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:10:50,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:10:50,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:10:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:10:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=570, Unknown=2, NotChecked=0, Total=650 [2024-11-09 07:10:50,661 INFO L87 Difference]: Start difference. First operand 120 states and 161 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:10:53,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:10:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:10:56,854 INFO L93 Difference]: Finished difference Result 246 states and 340 transitions. [2024-11-09 07:10:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:10:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-09 07:10:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:10:56,858 INFO L225 Difference]: With dead ends: 246 [2024-11-09 07:10:56,858 INFO L226 Difference]: Without dead ends: 143 [2024-11-09 07:10:56,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=78, Invalid=570, Unknown=2, NotChecked=0, Total=650 [2024-11-09 07:10:56,860 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 33 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:10:56,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 570 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2024-11-09 07:10:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-09 07:10:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-09 07:10:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 125 states have (on average 1.376) internal successors, (172), 126 states have internal predecessors, (172), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-09 07:10:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2024-11-09 07:10:56,886 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 87 [2024-11-09 07:10:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:10:56,887 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2024-11-09 07:10:56,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:10:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2024-11-09 07:10:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 07:10:56,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:10:56,890 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:10:56,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-09 07:10:57,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (20)] Forceful destruction successful, exit code 0 [2024-11-09 07:10:57,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:10:57,291 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:10:57,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:10:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1942532790, now seen corresponding path program 1 times [2024-11-09 07:10:57,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:10:57,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690087498] [2024-11-09 07:10:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:10:57,293 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 [2024-11-09 07:10:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:10:57,296 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:10:57,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5992816f-097d-4955-97e3-ffcd62494a1e/bin/utaipan-verify-YMUCfTKeje/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 (22)] Waiting until timeout for monitored process [2024-11-09 07:11:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:03,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:11:03,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:11:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 07:11:18,433 INFO L311 TraceCheckSpWp]: Computing backward predicates...