./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:49,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:49,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:07:49,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:49,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:49,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:49,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:49,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:49,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:49,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:49,236 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:49,237 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:49,237 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:49,238 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:49,238 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:49,239 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:49,239 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:49,240 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:49,240 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:49,241 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:49,242 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:49,242 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:49,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:49,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:49,244 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:49,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:49,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:49,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:49,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:49,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:49,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:49,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:49,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:49,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:49,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:49,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:49,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:49,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:49,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:49,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:49,268 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:49,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:49,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:49,269 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:49,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:49,270 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_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2023-11-19 05:07:49,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:49,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:49,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:49,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:49,621 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:49,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-19 05:07:52,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:52,887 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:52,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-19 05:07:52,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/ac9cde76d/9d48a3bca35a4372ad36a3deab1752e1/FLAG6a5682b21 [2023-11-19 05:07:52,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/ac9cde76d/9d48a3bca35a4372ad36a3deab1752e1 [2023-11-19 05:07:52,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:52,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:52,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:52,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:52,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:52,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:52" (1/1) ... [2023-11-19 05:07:52,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413c3284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:52, skipping insertion in model container [2023-11-19 05:07:52,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:52" (1/1) ... [2023-11-19 05:07:52,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:53,576 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2254) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1484) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1141) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:278) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2487) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2487) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2487) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1669) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:231) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:383) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1510) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3408) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2429) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 05:07:53,582 INFO L158 Benchmark]: Toolchain (without parser) took 661.37ms. Allocated memory is still 165.7MB. Free memory was 136.2MB in the beginning and 123.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:07:53,583 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:07:53,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 659.20ms. Allocated memory is still 165.7MB. Free memory was 136.2MB in the beginning and 124.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:07:53,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 659.20ms. Allocated memory is still 165.7MB. Free memory was 136.2MB in the beginning and 124.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:56,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:56,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:07:56,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:56,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:56,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:56,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:56,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:56,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:56,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:56,251 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:56,252 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:56,252 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:56,254 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:56,254 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:56,254 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:56,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:56,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:56,257 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:56,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:56,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:56,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:56,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:56,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:56,259 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:07:56,259 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:07:56,260 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:07:56,260 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:56,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:56,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:56,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:56,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:07:56,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:56,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:56,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:56,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:56,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:56,265 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:07:56,265 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:07:56,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:56,266 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:56,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:56,267 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2023-11-19 05:07:56,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:56,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:56,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:56,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:56,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:56,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-19 05:07:59,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:08:00,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:08:00,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-19 05:08:00,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/e7c09906e/5f50a746d2ce4dd48c6494af4b883c8b/FLAG7d38353a2 [2023-11-19 05:08:00,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/data/e7c09906e/5f50a746d2ce4dd48c6494af4b883c8b [2023-11-19 05:08:00,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:08:00,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:08:00,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:00,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:08:00,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:08:00,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:00" (1/1) ... [2023-11-19 05:08:00,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce11936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:00, skipping insertion in model container [2023-11-19 05:08:00,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:00" (1/1) ... [2023-11-19 05:08:00,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:08:00,882 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2023-11-19 05:08:00,888 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2023-11-19 05:08:00,890 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2023-11-19 05:08:00,894 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2023-11-19 05:08:00,895 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2023-11-19 05:08:00,896 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2023-11-19 05:08:00,897 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2023-11-19 05:08:00,898 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2023-11-19 05:08:00,900 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2023-11-19 05:08:00,901 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2023-11-19 05:08:00,903 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2023-11-19 05:08:00,904 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2023-11-19 05:08:00,909 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2023-11-19 05:08:00,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:00,955 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:08:01,036 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2023-11-19 05:08:01,038 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2023-11-19 05:08:01,040 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2023-11-19 05:08:01,042 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2023-11-19 05:08:01,042 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2023-11-19 05:08:01,043 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2023-11-19 05:08:01,044 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2023-11-19 05:08:01,044 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2023-11-19 05:08:01,045 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2023-11-19 05:08:01,046 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2023-11-19 05:08:01,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2023-11-19 05:08:01,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2023-11-19 05:08:01,049 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2023-11-19 05:08:01,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:01,231 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:08:01,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01 WrapperNode [2023-11-19 05:08:01,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:01,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:01,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:08:01,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:08:01,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,302 INFO L138 Inliner]: procedures = 449, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2023-11-19 05:08:01,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:01,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:08:01,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:08:01,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:08:01,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:08:01,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:08:01,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:08:01,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:08:01,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (1/1) ... [2023-11-19 05:08:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:01,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:08:01,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:08:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:08:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:08:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:08:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:08:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:08:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:08:01,556 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:08:01,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:10,962 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:10,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:10,980 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:08:10,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:10 BoogieIcfgContainer [2023-11-19 05:08:10,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:10,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:10,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:10,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:10,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:00" (1/3) ... [2023-11-19 05:08:10,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c100342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:10, skipping insertion in model container [2023-11-19 05:08:10,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:01" (2/3) ... [2023-11-19 05:08:10,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c100342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:10, skipping insertion in model container [2023-11-19 05:08:10,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:10" (3/3) ... [2023-11-19 05:08:10,998 INFO L112 eAbstractionObserver]: Analyzing ICFG float21.i [2023-11-19 05:08:11,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:11,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 05:08:11,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:11,083 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ff13ecd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:11,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 05:08:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:08:11,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:11,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:08:11,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:11,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2023-11-19 05:08:11,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047465840] [2023-11-19 05:08:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:11,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:11,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:11,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:11,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:08:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:11,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:11,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:11,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:11,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:11,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047465840] [2023-11-19 05:08:11,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047465840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:11,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:11,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694519369] [2023-11-19 05:08:11,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:11,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:11,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:11,392 INFO L87 Difference]: Start difference. First operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:13,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:15,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:15,284 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2023-11-19 05:08:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:08:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:15,294 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:08:15,294 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 05:08:15,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:15,300 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:15,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-19 05:08:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 05:08:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-19 05:08:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 42 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2023-11-19 05:08:15,340 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 4 [2023-11-19 05:08:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:15,340 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2023-11-19 05:08:15,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2023-11-19 05:08:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:15,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:15,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:15,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:15,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1079818240, now seen corresponding path program 1 times [2023-11-19 05:08:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200478900] [2023-11-19 05:08:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:15,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:15,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:08:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:15,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:08:15,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:15,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:15,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200478900] [2023-11-19 05:08:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200478900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:15,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:08:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136630337] [2023-11-19 05:08:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:15,866 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:08:18,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:21,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:22,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:24,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:26,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:28,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:28,735 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-11-19 05:08:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:28,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2023-11-19 05:08:28,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:28,748 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:08:28,748 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:08:28,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:08:28,750 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:28,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 100 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2023-11-19 05:08:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:08:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 05:08:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 40 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2023-11-19 05:08:28,758 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 11 [2023-11-19 05:08:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:28,759 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2023-11-19 05:08:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:08:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2023-11-19 05:08:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:08:28,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:28,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:28,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:28,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:28,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -885368843, now seen corresponding path program 1 times [2023-11-19 05:08:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558548509] [2023-11-19 05:08:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:28,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:28,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:28,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:08:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:29,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:29,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:29,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:29,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:29,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558548509] [2023-11-19 05:08:29,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558548509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:29,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:29,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:29,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786427271] [2023-11-19 05:08:29,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:29,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:29,093 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:08:31,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:33,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:33,612 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2023-11-19 05:08:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-19 05:08:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:33,620 INFO L225 Difference]: With dead ends: 45 [2023-11-19 05:08:33,620 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 05:08:33,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:33,622 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:33,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 05:08:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 05:08:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-19 05:08:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 36 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2023-11-19 05:08:33,630 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 12 [2023-11-19 05:08:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:33,630 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2023-11-19 05:08:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:08:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2023-11-19 05:08:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:08:33,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:33,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:33,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:33,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:33,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:33,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1435316947, now seen corresponding path program 1 times [2023-11-19 05:08:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:33,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551213754] [2023-11-19 05:08:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:33,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:33,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:33,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:33,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:08:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:33,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:08:33,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:08:34,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:34,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:34,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551213754] [2023-11-19 05:08:34,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551213754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:34,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:34,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:08:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880836261] [2023-11-19 05:08:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:34,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:34,282 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:38,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:39,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:41,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:43,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:44,473 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2023-11-19 05:08:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-19 05:08:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:44,485 INFO L225 Difference]: With dead ends: 41 [2023-11-19 05:08:44,485 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 05:08:44,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:08:44,487 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:44,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 53 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2023-11-19 05:08:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 05:08:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 05:08:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 34 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-11-19 05:08:44,494 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 19 [2023-11-19 05:08:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:44,494 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-11-19 05:08:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-11-19 05:08:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:08:44,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:44,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:44,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:44,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:44,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:44,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:44,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1545156500, now seen corresponding path program 1 times [2023-11-19 05:08:44,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111699442] [2023-11-19 05:08:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:44,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:44,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:44,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:08:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:44,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:44,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:08:44,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:44,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111699442] [2023-11-19 05:08:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111699442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:44,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:44,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:44,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671278392] [2023-11-19 05:08:44,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:44,956 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:47,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:48,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:50,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:08:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:50,479 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-11-19 05:08:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-19 05:08:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:50,486 INFO L225 Difference]: With dead ends: 39 [2023-11-19 05:08:50,486 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:08:50,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:50,488 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:50,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-19 05:08:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:08:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-19 05:08:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 30 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-11-19 05:08:50,498 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 20 [2023-11-19 05:08:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:50,499 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-11-19 05:08:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-11-19 05:08:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:08:50,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:50,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:50,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:08:50,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:50,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:50,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1163156356, now seen corresponding path program 1 times [2023-11-19 05:08:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746863460] [2023-11-19 05:08:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:50,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:50,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:50,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:08:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:50,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:50,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:08:50,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:50,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746863460] [2023-11-19 05:08:50,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746863460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:50,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487496892] [2023-11-19 05:08:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:50,980 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:54,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:55,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:55,551 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-11-19 05:08:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:55,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-19 05:08:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:55,563 INFO L225 Difference]: With dead ends: 35 [2023-11-19 05:08:55,563 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 05:08:55,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:55,564 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:55,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 05:08:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 05:08:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-19 05:08:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 28 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:08:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-11-19 05:08:55,571 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2023-11-19 05:08:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:55,572 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-11-19 05:08:55,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-19 05:08:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:08:55,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:55,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:55,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:08:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:55,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-19 05:08:55,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1698104541, now seen corresponding path program 1 times [2023-11-19 05:08:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197589691] [2023-11-19 05:08:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:55,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:55,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f66342-ed54-452e-b377-6a97a137ff39/bin/utaipan-verify-t7M7D8N6sZ/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)] Waiting until timeout for monitored process [2023-11-19 05:08:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:55,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:55,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:08:56,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:56,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197589691] [2023-11-19 05:08:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197589691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88576717] [2023-11-19 05:08:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:56,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:56,041 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:58,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:59,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []