./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:28:05,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:28:05,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:28:05,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:28:05,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:28:05,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:28:05,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:28:05,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:28:05,163 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:28:05,164 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:28:05,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:28:05,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:28:05,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:28:05,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:28:05,167 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:28:05,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:28:05,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:28:05,168 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:28:05,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:28:05,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:28:05,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:28:05,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:28:05,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:28:05,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:28:05,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:28:05,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:28:05,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:28:05,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:28:05,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:28:05,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:28:05,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:28:05,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:05,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:28:05,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:28:05,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:28:05,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:28:05,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:28:05,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:28:05,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:28:05,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:28:05,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:28:05,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:28:05,180 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2023-11-29 00:28:05,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:28:05,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:28:05,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:28:05,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:28:05,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:28:05,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2023-11-29 00:28:08,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:28:08,332 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:28:08,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2023-11-29 00:28:08,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/b7f83bb2c/e6dfcde31fa24419b0f8b0fa3ce3ef96/FLAGc51aea229 [2023-11-29 00:28:08,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/b7f83bb2c/e6dfcde31fa24419b0f8b0fa3ce3ef96 [2023-11-29 00:28:08,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:28:08,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:28:08,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:28:08,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:28:08,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:28:08,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:08" (1/1) ... [2023-11-29 00:28:08,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ced19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:08, skipping insertion in model container [2023-11-29 00:28:08,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:08" (1/1) ... [2023-11-29 00:28:08,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:28:08,512 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_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2023-11-29 00:28:08,525 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1427) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:222) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:386) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2441) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-29 00:28:08,529 INFO L158 Benchmark]: Toolchain (without parser) took 171.82ms. Allocated memory is still 205.5MB. Free memory was 168.6MB in the beginning and 159.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:28:08,530 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:28:08,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.61ms. Allocated memory is still 205.5MB. Free memory was 167.8MB in the beginning and 159.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:28:08,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.61ms. Allocated memory is still 205.5MB. Free memory was 167.8MB in the beginning and 159.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:28:10,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:28:10,311 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 00:28:10,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:28:10,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:28:10,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:28:10,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:28:10,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:28:10,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:28:10,345 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:28:10,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:28:10,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:28:10,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:28:10,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:28:10,348 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:28:10,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:28:10,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:28:10,349 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:28:10,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:28:10,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:28:10,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:28:10,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:28:10,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:28:10,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:28:10,353 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:28:10,353 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:28:10,354 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:28:10,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:28:10,355 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:28:10,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:28:10,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:28:10,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:28:10,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:28:10,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:10,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:28:10,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:28:10,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:28:10,357 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:28:10,358 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:28:10,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:28:10,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:28:10,358 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:28:10,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:28:10,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:28:10,359 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:28:10,359 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2023-11-29 00:28:10,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:28:10,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:28:10,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:28:10,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:28:10,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:28:10,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2023-11-29 00:28:13,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:28:13,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:28:13,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2023-11-29 00:28:13,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/1fa424803/634a8e624a27429da5ae64fbec551d23/FLAG45407dd10 [2023-11-29 00:28:13,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/data/1fa424803/634a8e624a27429da5ae64fbec551d23 [2023-11-29 00:28:13,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:28:13,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:28:13,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:28:13,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:28:13,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:28:13,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:13,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1816534c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13, skipping insertion in model container [2023-11-29 00:28:13,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:13,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:28:13,903 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_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2023-11-29 00:28:13,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:28:13,949 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:28:13,961 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_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2023-11-29 00:28:13,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:28:13,993 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:28:13,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13 WrapperNode [2023-11-29 00:28:13,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:28:13,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:28:13,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:28:13,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:28:13,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,031 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2023-11-29 00:28:14,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:28:14,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:28:14,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:28:14,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:28:14,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,057 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 00:28:14,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:28:14,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:28:14,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:28:14,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:28:14,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (1/1) ... [2023-11-29 00:28:14,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:14,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:14,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:28:14,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:28:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:28:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:28:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:28:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:28:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:28:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:28:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:28:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:28:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:28:14,211 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:28:14,214 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:28:19,041 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:28:19,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:28:19,066 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:28:19,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:19 BoogieIcfgContainer [2023-11-29 00:28:19,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:28:19,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:28:19,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:28:19,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:28:19,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:28:13" (1/3) ... [2023-11-29 00:28:19,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e217c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:19, skipping insertion in model container [2023-11-29 00:28:19,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:13" (2/3) ... [2023-11-29 00:28:19,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e217c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:19, skipping insertion in model container [2023-11-29 00:28:19,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:19" (3/3) ... [2023-11-29 00:28:19,075 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_valuebound20.i [2023-11-29 00:28:19,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:28:19,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:28:19,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:28:19,133 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24920f8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:28:19,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:28:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:28:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:28:19,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:19,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:19,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:28:19,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1677847985, now seen corresponding path program 1 times [2023-11-29 00:28:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:28:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122195495] [2023-11-29 00:28:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:19,162 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 [2023-11-29 00:28:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:28:19,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:28:19,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:28:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:19,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:28:19,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:28:19,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:28:19,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:28:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122195495] [2023-11-29 00:28:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122195495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:19,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:19,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784761518] [2023-11-29 00:28:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:28:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:28:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:28:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:28:19,577 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:28:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:19,627 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2023-11-29 00:28:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:28:19,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-11-29 00:28:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:19,646 INFO L225 Difference]: With dead ends: 54 [2023-11-29 00:28:19,646 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 00:28:19,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:28:19,653 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:19,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 00:28:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-29 00:28:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:28:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-29 00:28:19,694 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 28 [2023-11-29 00:28:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:19,695 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-29 00:28:19,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:28:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-29 00:28:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:28:19,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:19,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:19,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:28:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:28:19,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:28:19,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash -201606027, now seen corresponding path program 1 times [2023-11-29 00:28:19,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:28:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116402149] [2023-11-29 00:28:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:19,903 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 [2023-11-29 00:28:19,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:28:19,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:28:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:28:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:22,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:28:22,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:28:34,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:49,704 WARN L876 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2023-11-29 00:29:02,457 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:29:08,036 WARN L876 $PredicateComparison]: unable to prove that (or (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) is different from true [2023-11-29 00:29:24,539 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:29:28,579 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:29:45,067 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:30:01,968 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:30:06,032 WARN L876 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:30:18,552 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:30:35,621 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:30:43,807 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:30:48,058 WARN L876 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (or (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|) (let ((.cse3 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse3)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)))) (bvadd (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1| .cse1)) (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse2 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse3))))))) (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32))))) is different from true [2023-11-29 00:30:48,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:30:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116402149] [2023-11-29 00:30:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116402149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [196784872] [2023-11-29 00:30:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:30:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:30:48,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:30:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-29 00:30:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:58,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:30:58,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:13,487 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:31:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:31:13,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:31,639 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:31:48,094 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:31:52,149 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:32:08,589 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:32:25,059 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:32:29,144 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (= (_ bv0 32) c_assume_abort_if_not_~cond) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:32:41,632 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:32:58,721 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:33:06,895 WARN L293 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:33:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [196784872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:33:06,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:33:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2023-11-29 00:33:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6116351] [2023-11-29 00:33:06,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:33:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:33:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:33:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:33:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=133, Unknown=7, NotChecked=196, Total=380 [2023-11-29 00:33:06,899 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:33:13,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:17,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:21,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:25,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:29,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:38,026 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-11-29 00:33:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:33:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2023-11-29 00:33:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:38,048 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:33:38,049 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 00:33:38,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=61, Invalid=200, Unknown=7, NotChecked=238, Total=506 [2023-11-29 00:33:38,050 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:38,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 89 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 124 Invalid, 4 Unknown, 0 Unchecked, 27.6s Time] [2023-11-29 00:33:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 00:33:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2023-11-29 00:33:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:33:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-11-29 00:33:38,062 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 28 [2023-11-29 00:33:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:38,063 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-11-29 00:33:38,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:33:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-11-29 00:33:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:33:38,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:38,064 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:38,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:33:38,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:33:38,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 00:33:38,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:38,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash -48751610, now seen corresponding path program 1 times [2023-11-29 00:33:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:33:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039205991] [2023-11-29 00:33:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:38,467 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 [2023-11-29 00:33:38,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:33:38,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:33:38,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:33:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:38,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:33:38,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:33:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:33:39,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:33:39,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:33:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039205991] [2023-11-29 00:33:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039205991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:33:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:33:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:33:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409508632] [2023-11-29 00:33:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:33:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:33:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:33:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:33:39,090 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:33:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:40,067 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-11-29 00:33:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:33:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-11-29 00:33:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:40,077 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:33:40,077 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:33:40,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:33:40,079 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:40,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:33:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:33:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-11-29 00:33:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 00:33:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-11-29 00:33:40,091 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 33 [2023-11-29 00:33:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:40,091 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-11-29 00:33:40,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:33:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-29 00:33:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:33:40,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:40,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:40,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 00:33:40,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:33:40,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:40,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1500178133, now seen corresponding path program 1 times [2023-11-29 00:33:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:33:40,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887769032] [2023-11-29 00:33:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:40,295 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 [2023-11-29 00:33:40,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:33:40,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:33:40,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:33:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:44,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:33:44,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:34:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:34:12,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:34:55,340 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:34:59,664 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)))) (let ((.cse4 (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8)) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse2))) (.cse6 (bvmul (_ bv8 32) .cse0)) (.cse7 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1))) (.cse3 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) (or (= (bvadd (bvneg (bvmul .cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse1) (bvmul (_ bv4 32) .cse2)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg .cse3) .cse4 .cse5 .cse6 .cse7) (_ bv0 32)) (not (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)))) .cse4 .cse5 .cse6 (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) .cse7) .cse3)))))) is different from true [2023-11-29 00:35:12,392 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:35:20,591 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:35:25,248 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)))) (let ((.cse4 (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8)) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse2))) (.cse6 (bvmul (_ bv8 32) .cse0)) (.cse7 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1))) (.cse3 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) (or (= (bvadd (bvneg (bvmul .cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse1) (bvmul (_ bv4 32) .cse2)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg .cse3) .cse4 .cse5 .cse6 .cse7) (_ bv0 32)) (not (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)))) .cse4 .cse5 .cse6 (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) .cse7) .cse3)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32))))))) is different from true [2023-11-29 00:35:37,551 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:35:50,229 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:35:54,280 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse3 (bvmul (_ bv8 32) .cse0)) (.cse4 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse6 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21|))) (or (not (= (bvadd (bvneg (bvmul (bvmul (_ bv4 32) .cse0) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) .cse3 .cse4 .cse5 .cse6) .cse7)) (= (bvadd .cse3 .cse4 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) .cse0)) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse1)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) .cse5 .cse6 (bvneg .cse7)) (_ bv0 32)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ bv2 32))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:36:06,589 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:36:19,071 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:36:31,365 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:36:43,854 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:36:47,930 WARN L876 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse3 (bvmul (_ bv8 32) .cse0)) (.cse4 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse6 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21|))) (or (not (= (bvadd (bvneg (bvmul (bvmul (_ bv4 32) .cse0) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) .cse3 .cse4 .cse5 .cse6) .cse7)) (= (bvadd .cse3 .cse4 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) .cse0)) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse1)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) .cse5 .cse6 (bvneg .cse7)) (_ bv0 32)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ bv2 32))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:37:00,774 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:37:08,976 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:37:26,267 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:37:34,472 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:37:42,693 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:37:47,184 WARN L876 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse4 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse1 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse3 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8))) (let ((.cse2 (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1| .cse3))) (.cse0 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (.cse5 (bvmul (_ bv8 32) .cse1)) (.cse6 (bvmul (_ bv4 32) (bvmul .cse4 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse7 (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8))))) (or (not (= .cse0 (bvadd (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse1))) .cse2 (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse4 (_ bv8 32))))) .cse5 .cse6 .cse7))) (= (_ bv0 32) (bvadd .cse2 (bvneg (bvmul (bvmul |ULTIMATE.start_main_~a~0#1| (_ bv2 32)) (bvadd (bvmul (_ bv4 32) .cse3) (bvmul .cse4 (_ bv4 32))))) (bvneg .cse0) .cse5 .cse6 .cse7 (bvneg (bvmul (bvmul (_ bv4 32) |ULTIMATE.start_main_~a~0#1|) .cse1)))) (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)))))))) is different from true [2023-11-29 00:37:47,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:37:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887769032] [2023-11-29 00:37:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887769032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:37:47,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794544424] [2023-11-29 00:37:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:47,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 00:37:47,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 00:37:47,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 00:37:47,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-29 00:37:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:37:57,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:37:57,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:29,605 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:38:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:38:33,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:52,204 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:05,152 WARN L293 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:13,352 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:25,634 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:33,875 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:42,261 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (let ((.cse2 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8))) (let ((.cse3 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31|)) (.cse4 (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| .cse0))) (.cse5 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse6 (bvmul (_ bv8 32) .cse2))) (or (not (= (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse0) (bvmul .cse1 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (bvmul (_ bv4 32) .cse2))) .cse3 .cse4 .cse5 .cse6) .cse7)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ bv2 32)) (= (_ bv0 32) (bvadd (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) .cse2)) .cse3 (bvneg .cse7) (bvneg (bvmul (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)))) .cse4 .cse5 .cse6))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:39:54,515 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:40:02,718 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:40:19,254 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:40:27,472 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:40:35,814 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (let ((.cse2 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8))) (let ((.cse3 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31|)) (.cse4 (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| .cse0))) (.cse5 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse6 (bvmul (_ bv8 32) .cse2))) (or (not (= (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse0) (bvmul .cse1 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (bvmul (_ bv4 32) .cse2))) .cse3 .cse4 .cse5 .cse6) .cse7)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ bv2 32)) (= (_ bv0 32) (bvadd (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) .cse2)) .cse3 (bvneg .cse7) (bvneg (bvmul (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)))) .cse4 .cse5 .cse6))))))) (= (_ bv0 32) c_assume_abort_if_not_~cond) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:40:48,457 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:40:56,660 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:41:13,950 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:41:22,145 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:41:30,343 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:41:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794544424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:30,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:30,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2023-11-29 00:41:30,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361248024] [2023-11-29 00:41:30,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:30,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:41:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:30,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:41:30,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=204, Unknown=9, NotChecked=238, Total=506 [2023-11-29 00:41:30,346 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 00:41:38,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:42,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:46,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:50,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:54,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:58,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:02,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:06,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:10,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:16,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:18,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:24,039 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2023-11-29 00:42:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:42:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2023-11-29 00:42:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:24,065 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:42:24,065 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 00:42:24,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=74, Invalid=287, Unknown=9, NotChecked=280, Total=650 [2023-11-29 00:42:24,067 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 13 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:24,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 97 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 178 Invalid, 9 Unknown, 0 Unchecked, 51.6s Time] [2023-11-29 00:42:24,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 00:42:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2023-11-29 00:42:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 00:42:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-11-29 00:42:24,078 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 38 [2023-11-29 00:42:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:24,078 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-11-29 00:42:24,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 00:42:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-11-29 00:42:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 00:42:24,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:24,080 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:24,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 00:42:24,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-29 00:42:24,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 00:42:24,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:24,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1015795441, now seen corresponding path program 1 times [2023-11-29 00:42:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:24,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132447607] [2023-11-29 00:42:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:24,482 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 [2023-11-29 00:42:24,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:24,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:42:24,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e1fa99-9cf4-48ff-8dc4-cd5b2ede8473/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:42:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:24,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:42:24,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:36,836 WARN L293 SmtUtils]: Spent 10.07s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:46,837 WARN L293 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:55,738 WARN L293 SmtUtils]: Spent 8.90s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:06,023 WARN L293 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:16,492 WARN L293 SmtUtils]: Spent 10.47s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:21,048 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4294967294 32) |c_ULTIMATE.start_main_~d~0#1|))) (and (= (bvurem |ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (_ bv4 32))) |c_ULTIMATE.start_main_~q~0#1|) (= (bvurem |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv20 32)) (= |c_ULTIMATE.start_main_~s~0#1| ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|))))))) (bvule |c_ULTIMATE.start_main_~d~0#1| (_ bv20 32)) (bvugt |c_ULTIMATE.start_main_~d~0#1| (_ bv2 32))) is different from false