./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36cff60f447e638bcf59fd616d88e90152ae496257c572a05c5d1e497b29e03 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:08:43,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:08:44,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:08:44,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:08:44,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:08:44,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:08:44,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:08:44,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:08:44,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:08:44,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:08:44,147 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:08:44,151 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:08:44,151 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:08:44,152 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:08:44,152 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:08:44,153 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:08:44,154 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:08:44,158 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:08:44,158 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:08:44,159 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:08:44,159 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:08:44,163 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:08:44,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:08:44,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:08:44,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:08:44,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:08:44,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:08:44,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:08:44,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:08:44,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:08:44,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:08:44,169 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:08:44,170 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:08:44,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:08:44,170 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:08:44,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:08:44,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:08:44,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:08:44,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:08:44,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:08:44,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:08:44,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:08:44,176 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:08:44,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:08:44,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:08:44,177 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:08:44,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:08:44,179 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36cff60f447e638bcf59fd616d88e90152ae496257c572a05c5d1e497b29e03 [2024-11-09 06:08:44,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:08:44,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:08:44,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:08:44,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:08:44,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:08:44,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:08:47,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:08:47,963 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:08:47,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:08:48,015 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/83e0f603c/f75b176938a04397a6a233d1684af874/FLAGd3f3a3b09 [2024-11-09 06:08:48,047 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/83e0f603c/f75b176938a04397a6a233d1684af874 [2024-11-09 06:08:48,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:08:48,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:08:48,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:48,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:08:48,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:08:48,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:48" (1/1) ... [2024-11-09 06:08:48,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf62dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:48, skipping insertion in model container [2024-11-09 06:08:48,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:48" (1/1) ... [2024-11-09 06:08:48,203 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:08:50,255 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i[71683,71696] [2024-11-09 06:08:50,668 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:3125) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:255) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1625) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:271) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2578) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:307) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1520) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:224) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1167) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1150) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleLoopBody(CHandler.java:3634) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1577) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:227) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1167) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1150) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1652) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2522) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:642) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:189) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:116) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:145) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 06:08:50,675 INFO L158 Benchmark]: Toolchain (without parser) took 2621.88ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 97.6MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-09 06:08:50,676 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 132.1MB. Free memory was 93.3MB in the beginning and 93.2MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:08:50,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2618.55ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 97.6MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-09 06:08:50,678 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 132.1MB. Free memory was 93.3MB in the beginning and 93.2MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2618.55ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 97.6MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:627) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36cff60f447e638bcf59fd616d88e90152ae496257c572a05c5d1e497b29e03 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:08:53,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:08:53,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 06:08:53,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:08:53,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:08:53,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:08:53,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:08:53,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:08:53,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:08:53,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:08:53,683 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:08:53,684 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:08:53,684 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:08:53,688 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:08:53,689 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:08:53,689 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:08:53,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:08:53,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:08:53,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:08:53,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:08:53,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:08:53,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:08:53,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:08:53,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:08:53,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:08:53,698 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:08:53,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:08:53,699 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:08:53,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:08:53,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:08:53,702 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:08:53,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:08:53,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:08:53,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:08:53,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:08:53,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:08:53,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:08:53,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:08:53,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:08:53,708 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:08:53,708 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:08:53,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:08:53,719 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:08:53,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36cff60f447e638bcf59fd616d88e90152ae496257c572a05c5d1e497b29e03 [2024-11-09 06:08:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:08:54,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:08:54,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:08:54,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:08:54,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:08:54,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:08:56,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:08:57,473 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:08:57,474 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:08:57,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/43f7b02f2/98aed30eb08846b2b717ad1c628d8129/FLAG6e73420d4 [2024-11-09 06:08:57,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/data/43f7b02f2/98aed30eb08846b2b717ad1c628d8129 [2024-11-09 06:08:57,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:08:57,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:08:57,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:57,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:08:57,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:08:57,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:57" (1/1) ... [2024-11-09 06:08:57,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26017062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:57, skipping insertion in model container [2024-11-09 06:08:57,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:57" (1/1) ... [2024-11-09 06:08:57,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:08:59,165 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i[71683,71696] [2024-11-09 06:08:59,723 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:59,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:08:59,902 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:09:00,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/sv-benchmarks/c/neural-networks/softsign_w8_r1_case_0_unsafe.c-amalgamation.i[71683,71696] [2024-11-09 06:09:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:09:00,642 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:09:00,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00 WrapperNode [2024-11-09 06:09:00,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:09:00,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:00,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:09:00,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:09:00,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,895 INFO L138 Inliner]: procedures = 780, calls = 1169, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 548 [2024-11-09 06:09:00,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:00,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:09:00,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:09:00,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:09:00,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:00,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:01,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:01,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:01,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:01,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:09:01,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:09:01,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:09:01,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:09:01,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (1/1) ... [2024-11-09 06:09:01,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:09:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:09:01,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:09:01,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:09:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2024-11-09 06:09:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNN [2024-11-09 06:09:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNN [2024-11-09 06:09:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2024-11-09 06:09:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:09:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:09:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:09:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:09:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:09:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:09:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:09:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_affine_matmul [2024-11-09 06:09:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_affine_matmul [2024-11-09 06:09:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:09:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:09:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:09:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:09:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 06:09:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2024-11-09 06:09:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNNcell [2024-11-09 06:09:01,175 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNNcell [2024-11-09 06:09:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 06:09:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2024-11-09 06:09:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:09:01,560 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:09:01,564 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:09:13,269 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2024-11-09 06:09:13,270 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:09:13,289 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:09:13,290 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:09:13,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:13 BoogieIcfgContainer [2024-11-09 06:09:13,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:09:13,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:09:13,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:09:13,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:09:13,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:08:57" (1/3) ... [2024-11-09 06:09:13,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f17bfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:13, skipping insertion in model container [2024-11-09 06:09:13,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:00" (2/3) ... [2024-11-09 06:09:13,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f17bfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:13, skipping insertion in model container [2024-11-09 06:09:13,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:13" (3/3) ... [2024-11-09 06:09:13,305 INFO L112 eAbstractionObserver]: Analyzing ICFG softsign_w8_r1_case_0_unsafe.c-amalgamation.i [2024-11-09 06:09:13,327 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:09:13,327 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:09:13,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:09:13,420 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c158a27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:09:13,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:09:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 125 states have (on average 1.52) internal successors, (190), 126 states have internal predecessors, (190), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:09:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:09:13,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:13,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:13,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:13,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1543902457, now seen corresponding path program 1 times [2024-11-09 06:09:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:13,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416198842] [2024-11-09 06:09:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:13,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:13,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:13,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 06:09:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:19,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 06:09:19,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:19,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:09:19,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:09:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416198842] [2024-11-09 06:09:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416198842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:19,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:09:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067317706] [2024-11-09 06:09:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:19,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:09:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:09:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:09:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:09:19,726 INFO L87 Difference]: Start difference. First operand has 139 states, 125 states have (on average 1.52) internal successors, (190), 126 states have internal predecessors, (190), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:19,774 INFO L93 Difference]: Finished difference Result 274 states and 402 transitions. [2024-11-09 06:09:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:09:19,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 06:09:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:19,788 INFO L225 Difference]: With dead ends: 274 [2024-11-09 06:09:19,789 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 06:09:19,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:09:19,798 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:19,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:09:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 06:09:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-09 06:09:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 122 states have (on average 1.4918032786885247) internal successors, (182), 122 states have internal predecessors, (182), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:09:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 196 transitions. [2024-11-09 06:09:19,874 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 196 transitions. Word has length 23 [2024-11-09 06:09:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:19,874 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 196 transitions. [2024-11-09 06:09:19,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 196 transitions. [2024-11-09 06:09:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:09:19,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:19,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:19,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 06:09:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:20,079 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:20,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash -862093895, now seen corresponding path program 1 times [2024-11-09 06:09:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:20,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741555267] [2024-11-09 06:09:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:20,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:20,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:20,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 06:09:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:25,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:09:25,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:25,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:09:25,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:09:25,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741555267] [2024-11-09 06:09:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741555267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:25,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:25,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:09:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806282876] [2024-11-09 06:09:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:25,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:09:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:09:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:09:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:09:25,678 INFO L87 Difference]: Start difference. First operand 135 states and 196 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:27,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:27,770 INFO L93 Difference]: Finished difference Result 267 states and 388 transitions. [2024-11-09 06:09:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:09:27,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 06:09:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:27,774 INFO L225 Difference]: With dead ends: 267 [2024-11-09 06:09:27,774 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 06:09:27,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:09:27,777 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:27,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 06:09:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 06:09:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-09 06:09:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 122 states have (on average 1.4836065573770492) internal successors, (181), 122 states have internal predecessors, (181), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:09:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2024-11-09 06:09:27,795 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 23 [2024-11-09 06:09:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:27,796 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2024-11-09 06:09:27,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2024-11-09 06:09:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:09:27,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:27,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:27,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:27,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:27,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:28,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1284795721, now seen corresponding path program 1 times [2024-11-09 06:09:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086026472] [2024-11-09 06:09:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:28,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:28,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:28,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 06:09:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:32,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:09:32,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:33,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:09:33,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:09:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086026472] [2024-11-09 06:09:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086026472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:33,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:09:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826412222] [2024-11-09 06:09:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:33,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:09:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:09:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:09:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:09:33,160 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:33,392 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2024-11-09 06:09:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:09:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 06:09:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:33,398 INFO L225 Difference]: With dead ends: 146 [2024-11-09 06:09:33,398 INFO L226 Difference]: Without dead ends: 125 [2024-11-09 06:09:33,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:09:33,400 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 19 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:33,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 748 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:09:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-09 06:09:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-09 06:09:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 113 states have (on average 1.4690265486725664) internal successors, (166), 113 states have internal predecessors, (166), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:09:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2024-11-09 06:09:33,415 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 23 [2024-11-09 06:09:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:33,416 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2024-11-09 06:09:33,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:09:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2024-11-09 06:09:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:09:33,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:33,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:33,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:33,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:33,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:33,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1937273746, now seen corresponding path program 1 times [2024-11-09 06:09:33,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65203925] [2024-11-09 06:09:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:33,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:33,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 06:09:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:57,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-09 06:09:57,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:57,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:09:57,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:09:57,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:09:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:09:57,887 INFO L224 Elim1Store]: Index analysis took 125 ms [2024-11-09 06:09:58,321 INFO L349 Elim1Store]: treesize reduction 90, result has 19.6 percent of original size [2024-11-09 06:09:58,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 47 [2024-11-09 06:09:58,707 INFO L349 Elim1Store]: treesize reduction 28, result has 26.3 percent of original size [2024-11-09 06:09:58,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 80 [2024-11-09 06:10:05,142 INFO L349 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2024-11-09 06:10:05,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2024-11-09 06:10:05,468 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-09 06:10:05,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 65 [2024-11-09 06:10:06,726 INFO L349 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2024-11-09 06:10:06,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2024-11-09 06:10:06,953 INFO L224 Elim1Store]: Index analysis took 162 ms [2024-11-09 06:10:07,819 INFO L349 Elim1Store]: treesize reduction 58, result has 35.6 percent of original size [2024-11-09 06:10:07,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 77 [2024-11-09 06:10:10,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 32 [2024-11-09 06:10:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:10,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:10,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:10:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65203925] [2024-11-09 06:10:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65203925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:10,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 06:10:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108682547] [2024-11-09 06:10:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:10,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:10:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:10:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:10:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:10:10,432 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:12,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:16,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:18,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:20,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:22,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:24,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:27,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:29,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:31,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:34,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:36,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:38,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:40,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:42,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:51,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:10:56,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:11:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:08,470 INFO L93 Difference]: Finished difference Result 231 states and 340 transitions. [2024-11-09 06:11:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:11:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 06:11:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:08,477 INFO L225 Difference]: With dead ends: 231 [2024-11-09 06:11:08,477 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 06:11:08,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:11:08,479 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 158 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 19 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:08,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1256 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 428 Invalid, 14 Unknown, 0 Unchecked, 56.6s Time] [2024-11-09 06:11:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 06:11:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 202. [2024-11-09 06:11:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 183 states have (on average 1.469945355191257) internal successors, (269), 185 states have internal predecessors, (269), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 06:11:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 295 transitions. [2024-11-09 06:11:08,507 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 295 transitions. Word has length 23 [2024-11-09 06:11:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:08,508 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 295 transitions. [2024-11-09 06:11:08,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:11:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 295 transitions. [2024-11-09 06:11:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:11:08,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:08,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:08,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-09 06:11:08,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:11:08,710 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:08,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1711980502, now seen corresponding path program 1 times [2024-11-09 06:11:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:11:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624885123] [2024-11-09 06:11:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:08,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:11:08,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:11:08,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:11:08,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 06:11:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:12,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:11:12,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:11:14,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:11:14,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:11:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624885123] [2024-11-09 06:11:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624885123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:14,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:11:14,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:11:14,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496696227] [2024-11-09 06:11:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:14,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:11:14,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:11:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:11:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:11:14,579 INFO L87 Difference]: Start difference. First operand 202 states and 295 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:11:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:15,921 INFO L93 Difference]: Finished difference Result 408 states and 603 transitions. [2024-11-09 06:11:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:11:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-09 06:11:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:15,923 INFO L225 Difference]: With dead ends: 408 [2024-11-09 06:11:15,924 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 06:11:15,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:11:15,929 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 22 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:15,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 686 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:11:15,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 06:11:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-09 06:11:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 176 states have (on average 1.4488636363636365) internal successors, (255), 178 states have internal predecessors, (255), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 06:11:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 281 transitions. [2024-11-09 06:11:15,948 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 281 transitions. Word has length 27 [2024-11-09 06:11:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:15,949 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 281 transitions. [2024-11-09 06:11:15,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:11:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 281 transitions. [2024-11-09 06:11:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 06:11:15,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:15,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:15,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:11:16,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:11:16,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:16,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1658345540, now seen corresponding path program 1 times [2024-11-09 06:11:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:11:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592573653] [2024-11-09 06:11:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:11:16,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:11:16,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:11:16,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 06:11:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:20,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:11:20,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:11:30,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:12:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:12:07,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:12:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592573653] [2024-11-09 06:12:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592573653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:12:07,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1413551781] [2024-11-09 06:12:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:07,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:12:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:12:07,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:12:07,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 06:12:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:12,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:12:12,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:19,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:12:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1413551781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:12:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13] total 24 [2024-11-09 06:12:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156683111] [2024-11-09 06:12:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:19,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:12:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:12:19,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:12:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=483, Unknown=1, NotChecked=0, Total=552 [2024-11-09 06:12:19,691 INFO L87 Difference]: Start difference. First operand 195 states and 281 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 06:12:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:21,356 INFO L93 Difference]: Finished difference Result 395 states and 583 transitions. [2024-11-09 06:12:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 72 [2024-11-09 06:12:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:21,360 INFO L225 Difference]: With dead ends: 395 [2024-11-09 06:12:21,360 INFO L226 Difference]: Without dead ends: 208 [2024-11-09 06:12:21,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=68, Invalid=483, Unknown=1, NotChecked=0, Total=552 [2024-11-09 06:12:21,363 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 33 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:21,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 793 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 06:12:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-09 06:12:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2024-11-09 06:12:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 180 states have (on average 1.4388888888888889) internal successors, (259), 182 states have internal predecessors, (259), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-09 06:12:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 285 transitions. [2024-11-09 06:12:21,383 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 285 transitions. Word has length 72 [2024-11-09 06:12:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:21,384 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 285 transitions. [2024-11-09 06:12:21,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 06:12:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 285 transitions. [2024-11-09 06:12:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 06:12:21,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:21,389 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:21,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-09 06:12:21,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:12:21,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:12:21,791 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:12:21,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1280049198, now seen corresponding path program 1 times [2024-11-09 06:12:21,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:12:21,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621126196] [2024-11-09 06:12:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:21,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:12:21,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:12:21,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:12:21,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-09 06:12:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:26,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:12:26,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:12:37,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:13:14,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:13:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621126196] [2024-11-09 06:13:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621126196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:13:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1526721444] [2024-11-09 06:13:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:14,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:13:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:13:14,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:13:14,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 06:13:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:21,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:13:21,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:13:33,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:51,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1526721444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:51,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502383505] [2024-11-09 06:13:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:51,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:51,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:13:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:55,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:13:55,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 06:14:02,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 06:14:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502383505] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:17,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:14:17,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13, 11, 7] total 32 [2024-11-09 06:14:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761927387] [2024-11-09 06:14:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:17,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:14:17,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:14:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:14:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:14:17,764 INFO L87 Difference]: Start difference. First operand 199 states and 285 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:14:19,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:21,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:24,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:29,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:31,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:32,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:37,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:42,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:45,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:14:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:46,157 INFO L93 Difference]: Finished difference Result 234 states and 335 transitions. [2024-11-09 06:14:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:14:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 80 [2024-11-09 06:14:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:46,164 INFO L225 Difference]: With dead ends: 234 [2024-11-09 06:14:46,164 INFO L226 Difference]: Without dead ends: 207 [2024-11-09 06:14:46,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 403 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 06:14:46,166 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 117 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:46,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 529 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 140 Invalid, 5 Unknown, 0 Unchecked, 26.7s Time] [2024-11-09 06:14:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-09 06:14:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 127. [2024-11-09 06:14:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 115 states have (on average 1.4173913043478261) internal successors, (163), 115 states have internal predecessors, (163), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:14:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 175 transitions. [2024-11-09 06:14:46,181 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 175 transitions. Word has length 80 [2024-11-09 06:14:46,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:46,181 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 175 transitions. [2024-11-09 06:14:46,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:14:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 175 transitions. [2024-11-09 06:14:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 06:14:46,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:46,185 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:46,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:46,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:46,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:46,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:46,786 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:46,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:46,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1994480717, now seen corresponding path program 1 times [2024-11-09 06:14:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:14:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507695216] [2024-11-09 06:14:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:46,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:14:46,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:14:46,790 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:14:46,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-09 06:14:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:51,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:14:51,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:15:04,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:15:46,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:15:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507695216] [2024-11-09 06:15:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507695216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:15:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575458759] [2024-11-09 06:15:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:46,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:15:46,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:15:46,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:15:46,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 06:15:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:55,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:15:55,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:16:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 06:16:05,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:16:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 06:16:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [575458759] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:16:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 13, 9] total 30 [2024-11-09 06:16:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629184966] [2024-11-09 06:16:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:16:31,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:16:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:16:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:16:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=768, Unknown=2, NotChecked=0, Total=870 [2024-11-09 06:16:31,149 INFO L87 Difference]: Start difference. First operand 127 states and 175 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 06:16:33,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:35,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:37,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:39,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:42,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:44,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:46,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:54,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:58,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:00,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:02,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:03,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:12,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:14,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:15,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:17,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:20,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:23,078 INFO L93 Difference]: Finished difference Result 199 states and 278 transitions. [2024-11-09 06:17:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:17:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 81 [2024-11-09 06:17:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:23,084 INFO L225 Difference]: With dead ends: 199 [2024-11-09 06:17:23,084 INFO L226 Difference]: Without dead ends: 180 [2024-11-09 06:17:23,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=119, Invalid=935, Unknown=2, NotChecked=0, Total=1056 [2024-11-09 06:17:23,086 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 190 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 21 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:23,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 734 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 228 Invalid, 10 Unknown, 0 Unchecked, 46.7s Time] [2024-11-09 06:17:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-09 06:17:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2024-11-09 06:17:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 118 states have (on average 1.4152542372881356) internal successors, (167), 120 states have internal predecessors, (167), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:17:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 182 transitions. [2024-11-09 06:17:23,100 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 182 transitions. Word has length 81 [2024-11-09 06:17:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:23,100 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 182 transitions. [2024-11-09 06:17:23,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 06:17:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 182 transitions. [2024-11-09 06:17:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 06:17:23,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:23,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:23,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-09 06:17:23,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:17:23,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:17:23,505 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:17:23,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:23,510 INFO L85 PathProgramCache]: Analyzing trace with hash -394179694, now seen corresponding path program 1 times [2024-11-09 06:17:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:17:23,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915945753] [2024-11-09 06:17:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:17:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:17:23,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:17:23,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 06:17:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:28,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:17:28,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:17:41,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:18:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:18:23,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915945753] [2024-11-09 06:18:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915945753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:18:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [296623889] [2024-11-09 06:18:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:23,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:18:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:18:23,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:18:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 06:18:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:30,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:18:30,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:18:38,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:18:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:18:51,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [296623889] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:51,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:18:51,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13, 6] total 26 [2024-11-09 06:18:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169336946] [2024-11-09 06:18:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:51,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:18:51,226 INFO L87 Difference]: Start difference. First operand 132 states and 182 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 06:18:54,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:18:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:55,706 INFO L93 Difference]: Finished difference Result 270 states and 382 transitions. [2024-11-09 06:18:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:18:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 83 [2024-11-09 06:18:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:55,710 INFO L225 Difference]: With dead ends: 270 [2024-11-09 06:18:55,710 INFO L226 Difference]: Without dead ends: 155 [2024-11-09 06:18:55,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:18:55,712 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 40 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:55,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 500 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 06:18:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-09 06:18:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-09 06:18:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 137 states have (on average 1.4087591240875912) internal successors, (193), 138 states have internal predecessors, (193), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-09 06:18:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2024-11-09 06:18:55,731 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 83 [2024-11-09 06:18:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:55,732 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2024-11-09 06:18:55,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 06:18:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2024-11-09 06:18:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 06:18:55,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:55,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:55,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:55,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:56,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:18:56,135 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:56,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1016434958, now seen corresponding path program 1 times [2024-11-09 06:18:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928321092] [2024-11-09 06:18:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:56,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:18:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:56,139 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:18:56,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-09 06:19:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:01,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:19:01,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:19:14,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:19:58,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928321092] [2024-11-09 06:19:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928321092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [294831043] [2024-11-09 06:19:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:19:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:19:58,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:19:58,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 06:20:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:04,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:20:04,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:20:18,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:20:40,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [294831043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:40,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034044936] [2024-11-09 06:20:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:40,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:40,184 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:40,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d2264-2953-4ce3-874b-e9653c22ec10/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 06:20:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:44,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:20:44,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:21:11,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034044936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:26,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:21:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8, 8, 11] total 36 [2024-11-09 06:21:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425014158] [2024-11-09 06:21:26,314 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:21:26,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 06:21:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:21:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 06:21:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1220, Unknown=1, NotChecked=0, Total=1332 [2024-11-09 06:21:26,316 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 36 states, 28 states have (on average 6.714285714285714) internal successors, (188), 33 states have internal predecessors, (188), 18 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (25), 11 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-09 06:21:28,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:30,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:32,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:34,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:36,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:38,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:40,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:44,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:46,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:48,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:50,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:52,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:55,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:58,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:00,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:03,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:15,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:17,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:30,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:33,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []